Ja"cob(?), n. [Cf. F. Jacob. See 2d Jack.] 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 (Polemonium cruleum), 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 defective spar. --
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.
(Surveying) See under Staff.
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Tue 18th December 2018