(noun) (Old Testament) son of Isaac; brother of Esau; father of the twelve patriarchs of Israel; Jacob wrestled with God and forced God to bless him, so God gave Jacob the new name of Israel (meaning ‘one who has been strong against God’)
Jacob, Francois Jacob
(noun) French biochemist who (with Jacques Monod) studied regulatory processes in cells (born in 1920)
Source: WordNet® 3.1
Ja"cob, n. Etym: [Cf. F. Jacob. See 2d Jack.]
Definition: A Hebrew patriarch (son of Isaac, and ancestor of the Jews),
who in a vision saw a ladder reaching up to heaven (Gen. xxviii. 12);
– also called Israel.
And Jacob said . . . with my staff I passed over this Jordan, and now
I am become two bands. Gen. xxxii. 9, 10.
Thy name shall be called no more Jacob, but Israel. Gen. xxxii. 28.
Jacob's ladder. (a) (Bot.) A perennial herb of the genus Polemonium
(P. coeruleum), having corymbs of drooping flowers, usually blue.
Gray. (b) (Naut.) A rope ladder, with wooden steps, for going aloft.
R. H. Dana, Jr. (c) (Naut.) A succession of short cracks in a
– Jacob's membrane. See Retina.
– Jacob's staff. (a) A name given to many forms of staff or weapon,
especially in the Middle Ages; a pilgrim's staff. [Obs.] Spenser. (b)
(Surveying) See under Staff.
Source: Webster’s Unabridged Dictionary 1913 Edition