- a highly organic material found in marshy or damp regions, composed of partially decayed vegetable matter: it is cut and dried for use as fuel.
- such vegetable matter used as fertilizer or fuel.
- a merry young girl; darling (used as a term of endearment).
- a compact brownish deposit of partially decomposed vegetable matter saturated with water: found in uplands and bogs in temperate and cold regions and used as a fuel (when dried) and as a fertilizer
- (as modifier)peat bog
- a piece of dried peat for use as fuel
- archaic, derogatory a person, esp a woman
- obsolete a term of endearment for a girl or woman
n.c.1200, in Scottish Latin, of unknown origin, probably from a Celtic root *pett- (cf. Cornish peyth, Welsh peth “quantity, part, thing,” Old Irish pet, Breton pez “piece”). The earliest sense is not of the turf but of the cut piece of it, and the Celtic root may be connected to that of piece.
- Partially decayed vegetable matter, especially peat moss, found in bogs. The low levels of oxygen and the acidic environment in bogs prevent the degradation of peat. Peat is burned as fuel and also used as fertilizer. See more at bog.