A / arbuscŭla
noun

arbuscŭla

gen. arbuscŭlae · gender feminine · decl. 1st
dim. from arbor, as majusculus, minusculus, from major, minor.
A small tree; shrub
A small tree, shrub.
Lit., Varr. R. R. 3, 15; Col. 5, 10, 7; 5, 11, 13; 11, 2, 79.—
by extension
Transf., of a tuft of feathers: arbuscula crinita, i. e. the crown on the head of the peacock, Plin. 11, 37, 44, § 121.—
a movable machine for propelling military engines
In mechanics, a movable machine for propelling military engines, Gr. ἁμαξόποδες, Vitr. 10, 20.