Search Result for "nurse log":
Wordnet 3.0

NOUN (1)

1. a large decomposing tree trunk that has fallen, usually in a forest; the decaying wood provides moisture and nutrients for a variety of insects and plants; 



WordNet (r) 3.0 (2006):

nurse log
    n 1: a large decomposing tree trunk that has fallen, usually in
         a forest; the decaying wood provides moisture and nutrients
         for a variety of insects and plants