Word Origin & History
frog
O.E. frogga, a dim. of frox, forsc, frosc "frog," from P.Gmc. *fruska-z (cf. O.N. froskr, M.Du. vorsc, Ger. Frosch "frog"), probably lit. "hopper" (cf. Skt. provate "hops," Rus. prygat "to hop, jump"). The L. word (rana) is imitative of croaking. As a derogatory term for "Frenchman," 1778 (short for frog-eater), but before that (1652) it meant "Dutch" (from frog-land "marshy land"). To have a frog in the throat "hoarseness" is from 1909. Frogman "scuba diver in rubber suit" is from 1945. Frog-march (1871) originated among London police and referred to their method of moving "a drunken or refractory prisoner" by carrying him face-down between four people, each holding a limb; the connection with frog perhaps being the notion of going along belly-down. By the 1930s, the verb was used in ref. to the much more efficient (but less frog-like) method of getting someone in an arm-behind-the-back hold and hustling him or her along like that.