爪牙

そうが【爪牙】

nails and fangs.

●爪牙にかかる fall into sb's clutches; fall a victim 《to…》.

●爪牙をとぐ keep a vigilant eye 《on…》; have (an) ambition to possess 《a land, a girl》

・爪牙を脱する escape (from) sb's clutches.