From WordNet (r) 2.0 (August 2003) [wn]:
grove
n 1: a small growth of trees without underbrush
2: garden consisting of a small cultivated wood without
undergrowth [syn: woodlet, orchard, plantation]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Grove \Grove\ (gr[=o]v), n. [AS. graf, fr. grafan to dig. The
original sense seems to have been a lane cut through trees.
See Grave, v., and cf. Groove.]
A smaller group of trees than a forest, and without
underwood, planted, or growing naturally as if arranged by
art; a wood of small extent.
[1913 Webster]
Note: The Hebrew word Asherah, rendered grove in the
Authorized Version of the Bible, is left untranslated
in the Revised Version. Almost all modern interpreters
agree that by Asherah an idol or image of some kind is
intended.
[1913 Webster]