strop¹

n.

a device, typically a strip of leather, for sharpening razors.

v.

(strops, stropping, stropped)

sharpen on or with a strop.

ME (in the sense ‘thong’, also as a naut. term): prob. a W. Gmc adoption of L. stroppus ‘thong’.

strop²

n.

Brit. informal a temper or bad mood.

1970s: prob. a back-form. from stroppy.

以上來源於：《簡明牛津英語詞典》