Wordnet 3.0
NOUN (1)
1.
any of several lichens of the genus Parmelia from which reddish brown or purple dyes are made;
[syn: crottle, crottal, crotal]
The Collaborative International Dictionary of English v.0.48:
crottal \crottal\ n.
any of several lichens of the genus Parmelia from which
reddish brown or purple dyes are made. [Also spelled
crottle and crotal.]
Syn: .
[WordNet 1.5]
WordNet (r) 3.0 (2006):
crottal
n 1: any of several lichens of the genus Parmelia from which
reddish brown or purple dyes are made [syn: crottle,
crottal, crotal]