Le mot anglais pour poussière est
dust

Définition en anglais

poussière
1. n-f. dust
des nuages de poussière cosmique - cosmic dust clouds
2. n-f. speck of dust
3. n-f. (plurale tantum) very little; next to nothing

dust	©
1. n. Poussière.
2. v. Faire la poussère, essuyer (enlever la poussière ou la saleté en frottant).

dust	©
1. n. Fine, dry particles of matter found in the air and covering the surface of objects, typically consisting of soil lifted up by the wind, pollen, hair, etc.
2. n. The act of cleaning by dusting.
3. n. (obsolete) A single particle of earth or other material.
4. n. The earth, as the resting place of the dead.
5. n. The earthy remains of bodies once alive; the remains of the human body.
6. n. (figurative) Something worthless.
7. n. (figurative) A low or mean condition.
8. n. (slang) cash; money (in reference to gold dust).
9. n. (colloquial) A disturbance or uproar.
to raise, or kick up, a dust
10. n. (mathematics) A totally disconnected set of points with a fractal structure.
11. v. To remove dust from.
The cleaning lady needs a stool to dust the cupboard.
12. v. (intransitive) To remove dust; to clean by removing dust.
Dusting always makes me cough.
13. v. (intransitive) Of a bird, to cover itself in sand or dry, dusty earth.
14. v. To spray or cover something with fine powder or liquid.
The mother dusted her baby's bum with talcum powder.
15. v. (chiefly US slang) To leave; to rush off.
16. v. To reduce to a fine powder; to levigate.