01 n. Fine, soft, hairy outgrowth from the skin or surface of animals or plants, not matted and fleecy like wool
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1.
Fine, soft, hairy outgrowth from the skin or surface of animals or plants, not matted and fleecy like wool(Zool.)“And the first down begins to shade his face.” — Dryden.
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2.
That which is made of down, as a bed or pillow; that which affords ease and repose, like a bed of down“When in the down I sink my head, Sleep, Death's twin brother, times my breath.” — Tennyson.“Thou bosom softness, down of all my cares!” — Southern.
Phrases & compounds
Down tree —
a tree of Central America (Ochroma Lagopus), the seeds of which are enveloped in vegetable wool.