Crine, for “hair” or a “head of hair,” comes from the Latin word crinis, meaning “hair.” These days it’s an obsolete word, recorded in English in the 1580s.
In Scottish English (Scots), crine means “to shrink” or “shrivel.” The word comes from the Scottish Gaelic word crìon, “to wither.” This word is recorded in the early 16th century. Some variant forms are kreen, cryne, and crein.
Besides these older uses of the word crine, the word has been used as an alternate spelling of cryin’ (a colloquialpronunciation of crying, with the spelling based on sound) by at least 1997. Initially, the spelling crine for cryin’ was humorously associated with Texas dialects, and later, Black English.
By the 2000s, crine had spread more widely on social media and was commonly found on sites like Twitter and in memes.