strop

noun

1. A poor-quality or unsaleable diamond.

   “[…] he almost fell out of the phone booth laughing and said to her, 'Boy, did my son buy a strop! Did he get stuck!'”

verb

Etymology: From 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.

1. To mark a sequence of letters syntactically as having a special property, such as being a keyword, e.g. by enclosing in apostrophes as in 'foo' or writing in uppercase as in FOO.