1. Old World aspen with a broad much-branched crown; northwestern Europe and Siberia to North Africa
   - quaking aspen, Populus tremula

Type of: aspen

• omelette pan
• omen
• omental bursa
• omentum
• omeprazole
• omer
• omerta
• omicron
• omigod
• omigosh
• ominous
• ominously
• omissible
• omission
• omissive
• omit
• Omiya
• ommastrephes
• ommatidium
• Ommiad
• omni-
• omnibus
• omnidirectional
• omnidirectional antenna
• omnidirectional radio range