Fang, n.
 1. Zool. The tusk of an animal, by which the prey is seized and held or torn; a long pointed tooth; esp., one of the usually erectile, venomous teeth of serpents. Also, one of the falcers of a spider.
    Since I am a dog, beware my fangs.   --Shak.
 2. Any shoot or other thing by which hold is taken.
    The protuberant fangs of the yucca.   --Evelyn.
 3. Anat. The root, or one of the branches of the root, of a tooth. See Tooth.
 4. Mining A niche in the side of an adit or shaft, for an air course.
 5. Mech. A projecting tooth or prong, as in a part of a lock, or the plate of a belt clamp, or the end of a tool, as a chisel, where it enters the handle.
 6. Naut. (a) The valve of a pump box. (b) A bend or loop of a rope.
 In a fang, fast entangled.
 To lose the fang, said of a pump when the water has gone out; hence: To fang a pump, to supply it with the water necessary to make it operate. [Scot.]

 ◄ ►