classmate

class·mate [classmate classmates] [ˈklɑːsmeɪt] [ˈklæsmeɪt] noun
a person who is or was in the same class as you at school or college
Example Bank:

• Are you curious to know where your former classmates are now?

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition

classmate / ˈklɑːs.meɪt / / ˈklæs- / noun [ C ]

A2 someone who is in the same class as you at school

Collins COBUILD Advanced Learner’s English Dictionary

classmate

/klɑ:smeɪt, klæs-/
(classmates)

Your classmates are students who are in the same class as you at school or college.

N-COUNT: oft poss N

Merriam-Webster's Advanced Learner's Dictionary

Merriam-Webster's Advanced Learner's Dictionary:

classmate

class·mate /ˈklæsˌmeɪt, Brit ˈklɑːsˌmeɪt/ noun, pl -mates [count] : a member of the same class in a school, college, or university
✦Classmate can refer to someone who is taking the same class as you or to someone who will graduate from your school or college in the same year as you.
• We were classmates in high school.
• She invited all of her classmates to her birthday party.