▪ a slender woman or girl: "an oh-so-slim sylph dressed in a black leotard"
2. a mainly dark green and blue hummingbird, the male of which has a long forked tail.
Word Originmid 17th century: from modern Latin sylphes, sylphi and the German plural Sylphen, perhaps based on Latin sylvestris ‘of the woods’ + nympha ‘nymph’.