Simple Definition of teammate
: a person who is on the same team as someone else
Full Definition of teammate
: a fellow member of a team
Examples of teammate in a sentence
They have been teammates for several years.
She's very popular among her teammates.
First Known Use of teammate
TEAMMATE Defined for Kids
Definition of teammate for Students
: a person who belongs to the same team as someone else
Seen and Heard
What made you want to look up teammate? Please tell us where you read or heard it (including the quote, if possible).