The Collaborative International Dictionary of English v.0.48:
Pig \Pig\, n. [Cf. D. big, bigge, LG. bigge, also Dan. pige
girl, Sw. piga, Icel. p[imac]ka.]
1. The young of swine, male or female; also, any swine; a
hog. "Two pigges in a poke." --Chaucer.
2. (Zool.) Any wild species of the genus Sus and related
3. [Cf. Sow a channel for melted iron.] An oblong mass of
cast iron, lead, or other metal. See Mine pig, under
4. One who is hoggish; a greedy person. [Low]
Masked pig. (Zool.) See under Masked.
Pig bed (Founding), the bed of sand in which the iron from
a smelting furnace is cast into pigs.
Pig iron, cast iron in pigs, or oblong blocks or bars, as
it comes from the smelting furnace. See Pig, 4.
Pig yoke (Naut.), a nickname for a quadrant or sextant.
A pig in a poke (that is, bag), a blind bargain; something
bought or bargained for, without the quality or the value
being known. [Colloq.]