consonant combination used in French orthography to represent the Arabic letter jim; it appears in some words from Arabic, Turkish, etc. taken into English via French.
also Rhône, river in southeastern France, via French from Latin rhodanus, Greekrhodanos, Gaulish *rodonos, *rotonos, said to be ultimately from a pre-Indo-European element meaning "to flow."
early 15c., cors "ordinary" (modern spelling is from late 16c.), probably adjectival use of noun cours (see course (n.)). Originally referring to rough cloth for ordinary wear, the sense of "rude, vulgar, unpolished" developed by c. 1500 and that of "obscene" by 1711.
Perhaps via the notion of "in regular or natural order," hence "common, vulgar" (compare the development of mean (adj.), also ornery from ordinary). Or it might be via the clothing sense, and the notion of "wanting fineness of texture or elegance of form." Or both, and there might be also an influence, via metathesis, of French gros (see gross (adj.)), which underwent a similar sense development. Related: Coarsely; coarseness.