down [1] ADVERB 1) towards or in a lower place or position. 2) to or at a lower level or value. 3) so as to lie flush or flat. 4) in or into a weaker or worse position, mood, or condition. 5) to a smaller amount or size, or a simpler or more basic state. 6) in or into writing. 7) from an earlier to a later point in time or order. 8) (of a computer system) out of action. 9) away from a central place or the north. 10) (down with ) expressing strong dislike. 11) (with reference to partial payment of a sum) made initially. 12) (of sailing) with the current or the wind.
PREPOSITION 1) from a higher to a lower point of. 2) at a point further along the course of. 3) throughout (a period of time). 4) along the course or extent of. 5) informal at or to (a place).
ADJECTIVE 1) directed or moving towards a lower place or position. 2) unhappy. 3) (of a computer system) out of action.
VERB informal 1) knock or bring to the ground. 2) consume (a drink).
be (or have a) down on — Cf. ↑have a down on
be down to — Cf. ↑be down to
down in the mouth — Cf. ↑down in the mouth
down on one's luck — Cf. ↑down on one's luck
down tools — Cf. ↑down tools
ORIGIN Old English.
down [2] NOUN 1) soft fine feathers forming the covering of a young bird or an insulating layer below the contour feathers of an adult bird, used for stuffing cushions and quilts. 2) fine soft hairs.
ORIGIN Old Norse.
down [3] NOUN 1) a gently rolling hill. 2) (the Downs) ridges of undulating chalk and limestone hills in southern England.
ORIGIN Old English.

English terms dictionary. 2015.