(Zoöl.), one of the superior maxillary teeth of some species of serpents, which, besides having the cavity for the pulp, is either perforated or grooved by a longitudinal canal, at the lower end of which the duct of the poison gland terminates. See Illust. under Fang.
To fang a pump
to supply it with the water necessary to make it operate. Scot.
To lose the fang
said of a pump when the water has gone out ; hence: