lock; tuft; tassel; feathering
Refers to a fringe or tuft of hair, especially on the legs of animals such as horses or dogs. Also used for ornamental tassels. The term 'penicil' is a technical veterinary term for a tuft of hair.
この犬種は脚に豊かな房毛がある。
This breed has abundant feathering on its legs.
馬の房毛をブラシでとかす。
I brush the horse's fetlock tufts.
Compound of 房 (ふさ, 'tuft, tassel') and 毛 (け, 'hair'). The reading ふさげ is a straightforward combination.