piston, plunger
(noun) mechanical device that has a plunging or thrusting motion
Piston, Walter Piston
(noun) United States neoclassical composer (1894-1976)
Source: WordNet® 3.1
Piston
A surname.
• Pintos, Points, Tipson, instop, opts in, pinots, pintos, pitons, points, posnit, postin
piston (plural pistons)
A solid disk or cylinder that fits inside a hollow cylinder, and moves under pressure (as in an engine) or displaces fluid (as in a pump)
(music) A valve device in some brass instruments for changing the pitch
(firearms)
piston (third-person singular simple present pistons, present participle pistoning, simple past and past participle pistoned)
(intransitive) To move up and down like a piston.
• Pintos, Points, Tipson, instop, opts in, pinots, pintos, pitons, points, posnit, postin
Source: Wiktionary
Pis"ton, n. Etym: [F. piston; cf. It. pistone piston, also pestone a large pestle; all fr. L. pinsere, pistum, to pound, to stamp. See Pestle, Pistil.] (Mach.)
Definition: A sliding piece which either is moved by, or moves against, fluid pressure. It usually consists of a short cylinder fitting within a cylindrical vessel along which it moves, back and forth. It is used in steam engines to receive motion from the steam, and in pumps to transmit motion to a fluid; also for other purposes. Piston head (Steam Eng.), that part of a piston which is made fast to the piston rod.
– Piston rod, a rod by which a piston is moved, or by which it communicates motion.
– Piston valve (Steam Eng.), a slide valve, consisting of a piston, or connected pistons, working in a cylindrical case which is provided with ports that are traversed by the valve.
Source: Webster’s Unabridged Dictionary 1913 Edition
29 April 2024
(noun) a geological process in which one edge of a crustal plate is forced sideways and downward into the mantle below another plate
Contrary to popular belief, coffee beans are not technically beans. They are referred to as such because of their resemblance to legumes. A coffee bean is a seed of the Coffea plant and the source for coffee. It is the pit inside the red or purple fruit, often referred to as a cherry. Just like ordinary cherries, the coffee fruit is also a so-called stone fruit.
