partner

Definitions

(Noun) a person who works with someone else on a similar job; co-worker

---

(Noun) person with whom one shares responsibility and devotion to a common cause

---

(Noun) someone who works with you.

---

(Noun) Someone who has your back day in day out

---

1. Casual term for a spouse. See wife and husband for synonyms.

2. short for sexual partner.