A breed of multihorned sheep.

One of the sons of Isaac and Rebecca, and twin brother of Esau; father of the Israelites (Jews and Samaritans). / A male given name from Hebrew.

(UK, slang) Testicles (sometimes spelt Jacob's).

An English surname originating as a patronymic derived from Jacob.

Alternative form of Jacobs

Of or relating to the biblical Jacob.

(anatomy) A layer of rod cells and cone cells in the retina of the human eye.

plural of Jacob's staff

(biblical) The stone mentioned in the Book of Genesis as having been used as a pillow by the Israelite patriarch Jacob at the place later called Bet-El. Since Jacob had a vision in his sleep, he then consecrated the stone to God. More recently, the stone has been claimed by Scottish folklore and British Israelism.

(surveying) A single straight rod or staff, pointed and iron-shod at the bottom, for penetrating the ground, and having a socket joint at the top, used, instead of a tripod, for supporting a compass.