1590s, "dress, covering," variant of gaberdine. Meaning "closely woven cloth" is from 1904.
Entries linking to gabardine
"long, loose outer garment," 1510s, from Spanish gabardina, which Watkins says is from French galverdine, from a Germanic source such as Middle High German wallevart "pilgrimage" (German Wallfahrt) in the sense of "pilgrim's cloak." The compound would represent Proto-Germanic *wal- (source also of Old High German wallon "to roam, wander, go on a pilgrimage;" see gallant (adj.)) and Proto-Germanic *faran "to go" (from PIE root *per- (2) "to lead, pass over"). The Spanish form perhaps was influenced by Spanish gabán "overcoat" and tabardina "coarse coat." Century Dictionary, however, says the Spanish word is an extended form of gabán and the Spanish word was borrowed and underwent alterations in Old French.