Note to Romeo and Juliet, 1.4.66: "whip of cricket's bone, the lash of film"

Romeo and Juliet,
Act 1, Scene 4, line 66.
Queen Mab would use a whip made of cricket bone with the lashing end made of film like the gossamer threads of cobweb which float in the air, get caught on bushes, and can be seen only when the light is right.

Carriage Whip