Pronunciation: (fif'tēnth'), [key]
1. next after the fourteenth; being the ordinal number for 15.
2. being one of 15 equal parts.
1. a fifteenth part, esp. of one (1/15).
2. the fifteenth member of a series.
3. Music.the interval of two octaves.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.