The Collaborative International Dictionary
Arbuscle
Arbuscle \Ar"bus*cle\, n. [L. arbuscula small tree, shrub, dim.
of arbor tree.]
A dwarf tree, one in size between a shrub and a tree; a
treelike shrub.
--Bradley.
Wiktionary
arbuscle
n. 1 (context botany English) A plant midway between a shrub and a tree 2 (context biology English) A branched hypha in some fungus