• IPA: /ˈd͡ʒeɪkəb/

1. One of the sons of Isaac and Rebecca, and twin brother of Esau; father of the Israelites (Jews and Samaritans).
   • 1611, The Holy Bible, […] (King James Version), imprinted at London: By Robert Barker, […], OCLC 964384981 ↗, Genesis 25:27 ↗:

     And the boys grew: and Esau was a cunning hunter, a man of the field; and Jacob was a plain man, dwelling in tents

2. A male given name.
   • 1927 Ernest Hemingway: The Sun Also Rises: Chapter III:

     "Georgette. How are you called?" "Jacob." "That's a Flemish name." "American too." "You're not a Flamand?" "No, American." "Good, I detest Flamands." - - -

     Brett smiled at him. "I've promised to dance this with Jacob," she laughed. "You've a hell of a biblical name, Jake."

• (father of the Israelites): Israel, Yaakov

• James and its variants
• Jake, Jay, Jacques
• feminine: Jacqueline

• French: Jacob
• German: Jakob
• Italian: Giacobbe, Giacomo
• Portuguese: Jacó
• Russian: Иа́ков
• Spanish: Jacob

• French: Jacob
• German: Jakob
• Italian: Giacobbe
• Portuguese: Jaime
• Russian: Я́ков
• Spanish: Jacobo, Yago, Diego

Jacob (plural Jacobs)

1. A breed of multihorned sheep.