What Frasier must pay for a geranium? (10)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

Reference to the character Frasier Crane, from the US TV sitcoms Cheers and Frasier : what he has to pay = CRANE’S BILL . Another name for geranium, based on the shape of its fruit capsule which resembles a bird’s head and beak.