Complain About How Old You Are

[keanegooner]

Answer is an 8 letter word
The title of the quiz is At Your Leisure
All the answers are sports, pastimes, card games, board games etc

[Captain2]

Cribbage?

[Cloverjo]

Cribbage

[Captain2]

def 23

cribs, cribbing or cribbed
19. (tr) to put or enclose in or as if in a crib; furnish with a crib
20. (tr) informal to steal (another's writings or thoughts)
21. (Education) (intr) informal to copy either from a crib or from someone else during a lesson or examination
22. (Building) (tr) to line (a construction hole) with timber beams, logs, or planks
23. (intr) informal to grumble

[Prudie]

I've been trying to find a reason why crib(b) means complain?

[fiction-factory]

It is apparently an informal term meaning to grumble- see meaning number 23 (!) in Collins here.
https://www.collinsdictionary.com/dictionary/english/crib
Another dictionary refers to it as an old British term