(sociolinguistics, orthography) An apostrophe added to a Scots word in order to give the appearance that it is a contraction of an English word.

(Oxford British English) Alternative spelling of colourise / (Canadian spelling, Canada) Standard spelling of colourise.

Habitually lazy, procrastinating, or resistant to physical labor / Inducing laziness / (medicine) Causing little or no physical pain; progressing slowly; inactive (of an ulcer, etc.)

(mathematics, relativity) A geometrically flat spacetime, i.e. one with zero curvature.