详细解释:n. 青苔, 地衣, 苔藓病
【医】 地衣, 苔癣
词型变化：
形容词:lichenous动词过去式:lichened过去分词:lichened现在分词:lichening第三人称单数:lichens英语解释：
名词 lichen:
any of several eruptive skin diseases characterized by hard thick lesions grouped together and resembling lichens growing on rocksany thallophytic plant of the division Lichenes; occur as crusty patches or bushy growths on tree trunks or rocks or bare ground etc.例句：
The rock is full of lichen.岩石上长满了青苔。