5 letters · 7 points in Scrabble
noun a leather strap used to sharpen razors
verb sharpen on a strop
originFrom apostrophe, due to use of apostrophes as single quotation marks to indicate boldface in ALGOL 60. Other methods were used, especially in ALGOL 68, where the earlier matched apostrophes were no longer common, and the term became used more generally for any such method.
Etymology from Wiktionary, CC BY-SA 3.0