honey
(I wouldn't take any notice of a scrabble dictionary MA! Here is a list of some well known dictionaries which do feature the word.
xylophone : Encarta® World English Dictionary, North American Edition [home, info]
xylophone : Compact Oxford English Dictionary [home, info]
xylophone : Merriam-Webster's Online Dictionary, 10th Edition [home, info]
xylophone : Cambridge International Dictionary of English [home, info]
Xylophone : InfoVisual Visual Dictionary [home, info]
Xylophone : Wiktionary [home, info]
xylophone : The Wordsmyth English Dictionary-Thesaurus [home, info]
xylophone : The American Heritage® Dictionary of the English Language [home, info]
xylophone : Infoplease Dictionary [home, info]
xylophone : Dictionary.com [home, info]
xylophone : Online Etymology Dictionary [home, info]
xylophone : UltraLingua English Dictionary [home, info]
xylophone : Cambridge Dictionary of American English [home, info]
Xylophone : Wikipedia, the Free Encyclopedia [home, info]
Xylophone : Online Plain Text English Dictionary [home, info]
xylophone : Webster's Revised Unabridged, 1913 Edition [home, info]
xylophone : Rhymezone [home, info]
xylophone, xylophone (m) : AllWords.com Multi-Lingual Dictionary [home, info]
xylophone : Columbia Encyclopedia, Sixth Edition [home, info]
XYLOPHONE : 1911 edition of the Encyclopedia Britannica [home, info]
xylophone : WordNet 1.7 Vocabulary Helper [home, info]
xylophone : LookWAYup