Defn: A plastic, unctuous clay of a grayish white color, — used in making tobacco pipes and various kinds of earthenware, in scouring cloth, and in cleansing soldiers' equipments.

PIPECLAY
Pipe"clay`, v. t.

1. To whiten or clean with pipe clay, as a soldier's accouterments.

2. To clear off; as, to pipeclay accounts. [Slang, Eng.]

PIPED
Piped, a.

Defn: Formed with a pipe; having pipe or pipes; tubular.

PIPEFISH
Pipe"fish`, n. (Zoöl.)

Defn: Any lophobranch fish of the genus Siphostoma, or Syngnathus, and allied genera, having a long and very slender angular body, covered with bony plates. The mouth is small, at the end of a long, tubular snout. The male has a pouch on his belly, in which the incubation of the eggs takes place.

PIPELAYER; PIPE LAYER
Pipe"lay`er, n., or Pipe" lay`er.

1. One who lays conducting pipes in the ground, as for water, gas, etc.