O.E. fealh "fallow land," from P.Gmc. *falgo (cf. O.H.G. felga "harrow," E.Fris. falge "fallow," falgen "to break up ground"), perhaps from a derivation of PIE base *pel- "to turn," assimilated in Eng. to fallow (adj.) because of the color of plowed earth. Originally "plowed land," then "land plowed but not planted" (1523).
O.E. fealu "pale, faded, dark, yellowish-brown," from P.Gmc. *falwaz (cf. O.N. fölr, M.Du. valu, Ger. falb), from PIE *polwos "dark-colored, gray" (cf. O.C.S. plavu, Lith. palvas "sallow," Gk. polios, Welsh llwyd "gray," L. pallere "to be pale"). It also forms the root of words for "pigeon" in Gk. (peleia), L. (palumbes), O.Prus. (poalis).