mate noun
1 friend
ADJ. best, good They've been good mates ever since they were at school together.
VERB + MATE have He's got loads of mates at school.
2 sexual partner
VERB + MATE attract, choose, find These birds have colourful feathers to attract a mate.
You can also check other dicts: mate (English, 中文解释 ), wordnet sense, Collins Definition