any of several lichens of the genus Alectoria having a thallus consisting of filaments resembling hair
a fabric made from fibers taken from the mane or tail of horses; used for upholstery
hair taken from the mane or tail of a horse
any of several eruptive skin diseases characterized by hard thick lesions grouped together and resembling lichens growing on rocks
any thallophytic plant of the division Lichenes; occur as crusty patches or bushy growths on tree trunks or rocks or bare ground etc.