Definition of running mate
1 : companion
2 : a horse entered in a race to set the pace for a horse of the same owner or stable
3 : a candidate running for a subordinate place on a ticket; especially : the candidate for vice-president
Examples of running mate in a sentence
When John F. Kennedy ran for president, his running mate was Lyndon Johnson.
<inseparable running mates who first met when they were in elementary school>
First Known Use of running mate
RUNNING MATE Defined for English Language Learners
Definition of running mate for English Language Learners
: the person who runs with someone in an election (such as an election to choose a new president) and who is given the less important position (such as vice president) if they are elected
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