A strip of leather or other material used for sharpening razors. He used a strop to sharpen his straight razor before shaving.
A bad mood or temper, often used in British English. She was in a strop after hearing the disappointing news.
A short rope, wire, or strap with a loop or eye at one or both ends, used in maritime rigging or lifting to attach blocks, slings, or loads. The bosun secured the block with a strop before hoisting the sail.