"homely or unattractive woman, girl without beauty," attested by 1912, a rhyming formation from plain (adj.).
late 14c., "serving to bind," past-participle adjective from bind (v.). The meaning "having power to bind" is from 1610s.
"young lady, girl," 1510s, from French demoiselle (Old French damoisele, dameisele, dameiselle); an unmodified form of damsel (q.v.).
mid-15c., in grammar, "correlative," from Latin expletivus "serving to fill out" (see expletive (n.)).
"young girl," U.S. slang, c. 2002, from American Spanish chica "girl," fem. of chico "boy," noun use of adjective meaning "small" (here used as an affectionate term of address), from Latin ciccum, literally "chick-pea," figurative of a small thing or an object of little value (compare Old French chiche).