strop /strɒp $ strɑːp/ BrE AmE noun [countable]
[ Language: Old English ; Origin: 'leather band for tying an oar' , from Latin struppus 'band, strap' , from Greek strophos 'twisted band' ]
1 . a narrow piece of leather used for making a ↑ razor sharp
2 . in a strop British English informal annoyed about something:
She’s a nice person but she just gets in a strop so easily.