pair · noun C /per/
pair (TWO PEOPLE)
A1 two people who are doing something together
Dictionary example:
I'd like you to do this exercise in pairs.
Learner example:
We [do] dialogues in pairs or between other students. (Skills for Life (Entry 1); A1; Polish)
pair (TWO THINGS)
A2 two things that look the same and that are used together
Dictionary examples:
a pair of shoes/gloves
I can't find a matching pair of socks.
Learner example:
I got a pair of earrings from my parents. (Key English Test; A2; Farsi)
pair (TWO PARTS)
A2 something that is made of two parts that are joined together
Dictionary examples:
a pair of scissors/glasses
a pair of jeans
He packed two pairs of trousers and four shirts.
Learner example:
Don't forget to bring an old T-shirt and a pair of jeans. (Key English Test; A2; Portuguese)