1. European foxtail naturalized in North America; often a troublesome weed
   - green bristlegrass, green foxtail, rough bristlegrass, bottle-grass, bottle grass

Type of: foxtail, foxtail grass

• obliviousness
• oblong
• oblong leaf
• oblong woodsia
• oblongness
• obloquy
• obmutescence
• obnoxious
• obnoxiously
• obnoxiousness
• obnubilate
• oboe
• oboe d'amore
• oboe da caccia
• oboist
• obolus
• obovate
• obovate leaf
• obscene
• obscenely
• obscenity
• obscurantism
• obscurantist
• obscuration
• obscure