strop
noun
[ strɒp ]
• a device, typically a strip of leather, for sharpening razors.
strop
verb
• sharpen on or with a strop.
• "he stropped a knife razor-sharp on his belt"
Origin:
late Middle English (in the sense ‘thong’, also as a nautical term): probably a West Germanic adoption of Latin stroppus ‘thong’.
strop
noun
• a bad mood; a temper.
• "Nathalie gets in a strop and makes to leave"
Origin:
1970s: probably a back-formation from stroppy.