Green’s Dictionary of Slang

beasel n.

also beazle
[? SE besom]

(US) a young woman, with overtones of sexual precocity; thus beasel hound n., a man who pursues such girls.

[US]Appleton Post-Crescent (WI) 28 Apr. 17/4: beasel – A flapper slightly more advanced than a flapper. [...] beasel hound – A girl chaser.
[US]Judge (NY) 91 July-Dec. 31: Beazle - see Flamper.