Wordnet 3.0
NOUN (1)
1.
a type of fiberboard;
The Collaborative International Dictionary of English v.0.48:
Masonite \Masonite\ prop. n. [trademark.]
A type of fiberboard. [trademark]
[WordNet 1.5]
WordNet (r) 3.0 (2006):
Masonite
n 1: a type of fiberboard