The Collaborative International Dictionary
To dyst one's jacket
Dust \Dust\ (d[u^]st), v. t. [imp. & p. p. Dusted; p. pr. & vb. n. Dusting.]
To free from dust; to brush, wipe, or sweep away dust from; as, to dust a table or a floor.
To sprinkle with dust.
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To reduce to a fine powder; to levigate.
--Sprat.To dyst one's jacket, to give one a flogging. [Slang.]