'bottlegrass' definitions:

Definition of 'bottlegrass'

From: GCIDE

bottlegrass \bottlegrass\ n. (Bot.) a European foxtail naturalized in North America; it is often a troublesome weed.
Syn: green bristlegrass, green foxtail, rough bristlegrass, bottle grass, Setaria viridis. [WordNet 1.5]