I was goin' to slick up and drop around to see her, but this here Injun agent got in ahead of me.
He said we must slick up our swords and guns, and get ready.
He wished, though, that he could "slick up" a little to go to Johnny Welford's house.
The women need a chance to wash their faces and slick up a little.
As soon as I am back in my cell I remove my cap and coat and “slick up” for dinner.
He had donned a fresh shirt, ahead of time, and evidently had tried to slick up generally.
"I made 'em slick up, all I could," said the big girl, who said her name was Maggie Walsh.
The visitor sat down, after telling Childs that the sailor's mother need not stop to "slick up" before he was admitted.
When he knew in advance he was going with me, he went up to the bunkhouse to slick up.
Old English -slician (in nigslicod "newly made sleek"), from Proto-Germanic *slikojan, from base *slikaz (cf. Old Norse slikr "smooth," Old High German slihhan "to glide," German schleichen "to creep, crawl, sneak," Dutch slijk "mud, mire"), from PIE *sleig- "to smooth, glide, be muddy," from root *(s)lei- "slimy" (see slime (n.)). Related: Slicked; slicking.
1620s, a kind of cosmetic, from slick (v.). Meaning "smooth place on the surface of water caused by oil, etc." is attested from 1849. Meaning "a swindler, clever person" is attested from 1959.
early 14c., "smooth, glossy, sleek" (of skin or hair); sense of "clever in deception" is first recorded 1590s; that of "first-class, excellent" is from 1833. Related: Slickly; slickness.
To make neat and more attractive; furbish; gussy up: What are they all slicked up for? (1828+)
[earlier 1800s uses were in comparative phrases like slick as bear's grease and slick as molasses]