Green’s Dictionary of Slang

galdem n.

also gyaldem

(UK black) girls.

Stormzy ‘Shut Up’ 🎵 Party’s done, everybody go home / Apart from the gyaldem, you lot stay.
[UK]Wiley ‘On a Level’ 🎵 For the holiday season I got gyaldem who said they wanna start breedin’.
theculturetrip.com ‘Guide to London Slang 10 Jan. 🌐 Gyaldem – Girl grew, normally from Peckham.
[UK]G. Krauze What They Was 31: I guess the gyaldem were feeling him.