Of relatively recent origin and uncertain etymology. It is first recorded in the 19th century. It may be a shortened form of Belinda, an adoption of Spanish linda ‘pretty’, or a Latinate derivative of any of various other Germanic female names ending in -lind meaning ‘weak, tender, soft’. It was popular in the 20th century, especially in the 1950s.
English (chiefly southern Yorkshire and Lancashire): habitational name from any of several places called Mos(e)ley in central, western, and northwestern England. The obvious derivation is from Old English mos ‘peat bog’ + lēah ‘woodland clearing’, but the one in southern Birmingham (Museleie in Domesday Book) had as its first element Old English mūs ‘mouse’, while one in Staffordshire (Molesleie in Domesday Book) had the genitive case of the Old English byname Moll.