Strop, v. t. [imp. & p. p. Stropped p. pr. & vb. n. Stropping.] To draw over, or rub upon, a strop with a view to sharpen; as, to strop a razor.
strop
n : a leather strap used to sharpen razors
v : sharpen on a strop; "strop razors"
[also: stropping, stropped]