1 trousers la15-.
2 underpants: ‘Mammy, what a shame, a wean in my class peed her breeks...’ [Mummy, what a shame, a child in my class wet her pants.] 20-. etymology: Scots; Older Scots breke, breik, brekis, breeks ‘breeches, trousers’; attested by BS in TDITA, JS and ET