| roccella | (n) a source of the dye archil and of litmus, Syn. Roccella tinctoria |
| roccellaceae | (n) a fungus family of division Lichenes, Syn. family Roccellaceae |
| rochelle salt | (n) a double salt used in Seidlitz powder; acts as a cathartic, Syn. potassium sodium tartrate, Rochelle salts |
| rochelle | |
| rochelle |
| Rochelle | n. A seaport town in France. [ 1913 Webster ]
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