S: (n) phone, speech sound, sound ((phonetics) an individual sound unit of speech without concern as to whether or not it is a phoneme of some language)
S: (n) phoneme ((linguistics) one of a small set of speech sounds that are distinguished by the speakers of a particular language)
S: (n) slide, glide, coast (the act of moving smoothly along a surface while remaining in contact with it) "his slide didn't stop until the bottom of the hill"; "the children lined up for a coast down the snowy slope"