You can overdose on coffee if you drink about 30 cups in a brief period to get close to a lethal dosage of caffeine.
KNOCK
knock, belt, rap, whack, whang
(noun) the act of hitting vigorously; “he gave the table a whack”
knock, roast
(noun) negative criticism
knock
(noun) a bad experience; “the school of hard knocks”
knock, knocking
(noun) the sound of knocking (as on a door or in an engine or bearing); “the knocking grew louder”
knock, bash, bang, smash, belt
(noun) a vigorous blow; “the sudden knock floored him”; “he took a bash right in his face”; “he got a bang on the head”
knock, criticize, criticise, pick apart
(verb) find fault with; express criticism of; point out real or perceived flaws; “The paper criticized the new movie”; “Don’t knock the food--it’s free”
knock, strike hard
(verb) deliver a sharp blow or push; “He knocked the glass clear across the room”
bump, knock
(verb) knock against with force or violence; “My car bumped into the tree”
knock
(verb) rap with the knuckles; “knock on the door”
pink, ping, knock
(verb) sound like a car engine that is firing too early; “the car pinged when I put in low-octane gasoline”; “The car pinked when the ignition was too far retarded”
tap, rap, knock, pink
(verb) make light, repeated taps on a surface; “he was tapping his fingers on the table impatiently”
Source: WordNet® 3.1
Etymology
Noun
knock (countable and uncountable, plural knocks)
An abrupt rapping sound, as from an impact of a hard object against wood.
A sharp impact.
(figuratively) Criticism.
(automotive) Preignition, a type of abnormal combustion occurring in spark ignition engines caused by self-ignition; also, the characteristic knocking sound associated with it.
(cricket) A batsman's innings.
(cycling) synonym of hunger knock
Verb
knock (third-person singular simple present knocks, present participle knocking, simple past and past participle knocked)
(transitive, dated) To strike for admittance; to rap upon, as a door.
(transitive, colloquial) To criticize verbally; to denigrate; to undervalue.
(transitive, soccer) To kick a ball towards another player; to pass.
(transitive, Britain, slang, dated) To impress forcibly or strongly; to astonish; to move to admiration or applause.
(ambitransitive, dated) To bump or impact.
(intransitive) To rap one's knuckles against something, especially wood.
Conjugation
Etymology
Proper noun
Knock
A suburb of and ward in Belfast, Northern Ireland.
A village in Clare, Ireland.
A village in Mayo, Ireland, location of the Knock Shrine.
A village on the Isle of Lewis, Western Isles council area, Scotland (OS grid ref NB4931).
A village in Eden district, Cumbria, England (OS grid ref NY6827).
Source: Wiktionary
Knock, v. i. [imp. & p. p. Knocked; p. pr. & vb. n. Knocking.] Etym: [OE. knoken, AS. cnocian, cnucian; prob. of imitative origin; cf. Sw. knacka.Cf. Knack.]
1. To drive or be driven against something; to strike against something; to clash; as, one heavy body knocks against another. Bacon.
2. To strike or beat with something hard or heavy; to rap; as, to knock with a club; to knock on the door. For harbor at a thousand doors they knocked. Dryden. Seek, and ye shall find; knock, and it shall be opened unto you. Matt. vii. 7. To knock about, to go about, taking knocks or rough usage; to wander about; to saunter. [Colloq.] "Knocking about town." W. Irving.
– To knock up, to fail of strength; to become wearied or worn out, as with labor; to give out. "The horses were beginning to knock up under the fatigue of such severe service." De Quincey.
– To knock off, to cease, as from work; to desist.
– To knock under, to yield; to submit; to acknowledge one's self conquered; -- an expression probably borrowed from the practice of knocking under the table with the knuckles, when conquered. "Colonel Esmond knocked under to his fate." Thackeray.
Knock, v. t.
1. To strike with something hard or heavy; to move by striking; to drive (a thing) against something; as, to knock a ball with a bat; to knock the head against a post; to knock a lamp off the table. When heroes knock their knotty heads together. Rowe.
2. To strike for admittance; to rap upon, as a door. Master, knock the door hard. Shak. To knock down. (a) To strike down; to fell; to prostrate by a blow or by blows; as, to knock down an assailant. (b) To assign to a bidder at an auction, by a blow or knock; to knock off.
– To knock in the head, or on the head, to stun or kill by a blow upon the head; hence, to put am end to; to defeat, as a scheme or project; to frustrate; to quash. [Colloq.] -- To knock off. (a) To force off by a blow or by beating. (b) To assign to a bidder at an auction, by a blow on the counter. (c) To leave off (work, etc.). [Colloq.] -- To knock out, to force out by a blow or by blows; as, to knock out the brains.
– To knock up. (a) To arouse by knocking. (b) To beat or tire out; to fatigue till unable to do more; as, the men were entirely knocked up. [Colloq.] "The day being exceedingly hot, the want of food had knocked up my followers." Petherick. (c) (Bookbinding) To make even at the edges, or to shape into book form, as printed sheets.
Knock, n.
1. A blow; a stroke with something hard or heavy; a jar.
2. A stroke, as on a door for admittance; a rap. " A knock at the door." Longfellow. A loud cry or some great knock. Holland. Knock off, a device in a knitting machine to remove loops from the needles.
Source: Webster’s Unabridged Dictionary 1913 Edition
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(adjective) concerned primarily with theories or hypotheses rather than practical considerations; “theoretical science”
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