1. To grow warm or not by the action of fire or friction, etc., or the communication of heat; as, the iron or the water heats slow.

2. To grow warm or hot by fermentation, or the development of heat by chemical action; as, green hay heats in a mow, and manure in the dunghill.

HEAT
Heat, Etym: imp. & p. p. of Heat.

Defn: Heated; as, the iron though heat red-hot. [Obs. or Archaic.]
Shak.

HEATER
Heat"er, n.

1. One who, or that which, heats.

2. Any contrivance or implement, as a furnace, stove, or other heated body or vessel, etc., used to impart heat to something, or to contain something to be heated. Feed heater. See under Feed.

HEATH Heath, n. Etym: [OE. heth waste land, the plant heath, AS. h; akin to D. & G. heide, Icel. hei waste land, Dan. hede, Sw. hed, Goth. haipi field, L. bucetum a cow pasture; cf. W. coed a wood, Skr. ksh field. sq. root20.]

1. (Bot.) (a) A low shrub (Erica, or Calluna, vulgaris), with minute evergreen leaves, and handsome clusters of pink flowers. It is used in Great Britain for brooms, thatch, beds for the poor, and for heating ovens. It is also called heather, and ling. (b) Also, any species of the genus Erica, of which several are European, and many more are South African, some of great beauty. See Illust. of Heather.

2. A place overgrown with heath; any cheerless tract of country overgrown with shrubs or coarse herbage. Their stately growth, though bare, Stands on the blasted heath. Milton Heath cock (Zoöl.), the blackcock. See Heath grouse (below). — Heath grass (Bot.), a kind of perennial grass, of the genus Triodia (T. decumbens), growing on dry heaths. — Heath grouse, or Heath game (Zoöl.), a European grouse (Tetrao tetrix), which inhabits heats; — called also black game, black grouse, heath poult, heath fowl, moor fowl. The male is called, heath cock, and blackcock; the female, heath hen, and gray hen. — Heath hen. (Zoöl.) See Heath grouse (above). — Heath pea (bot.), a species of bitter vetch (Lathyris macrorhizus), the tubers of which are eaten, and in Scotland are used to flavor whisky. — Heath throstle (Zoöl.), a European thrush which frequents heaths; the ring ouzel.