lame (adj.)
O.E. lama, from P.Gmc. *lamon (cf. O.N. lami, Du., O.Fris. lam, Ger. lahm "lame"), "weak-limbed," lit. "broken," from PIE base *lem- "to break" (cf. O.C.S. lomiti "to break," Lith. luomas "lame"). Sense of "socially awkward" is attested from 1942. Verb meaning "to make lame" is attested from c.1300. Lame-duck was originally (18c.) "any disabled person or thing;" modern sense of "public official serving out term after an election" first recorded 1863 in Amer.Eng., attributed to Vice President Andrew Johnson, in reference to Col. Forney. Lame-brain (n.) is first recorded 1929.