What does the cryptic crossword clue "Check one mischievous cousin of ours (5)" mean?

The wordplay uses a charade (building blocks). CH (synonym="Check, in chess") + IMP (synonym="”one mischievous”") = CHIMP The answer is CHIMP.

Check one mischievous cousin of ours (5)

Guardian Cryptic #29519 | 23 Down | 2024-10-21 flower