1. Medium to tall fir of central to western United States having a narrow erect crown and soft wood
   - white fir, California white fir, Abies concolor, Abies lowiana

Type of: silver fir

• Umbellularia
• Umbellularia californica
• umber
• umbilical
• umbilical cord
• umbilical hernia
• umbilical vein
• umbilical vesicle
• umbilicate
• umbilicus
• umbles
• umbo
• umbra
• umbrage
• umbrageous
• umbrella
• umbrella arum
• umbrella bird
• umbrella fern
• umbrella magnolia
• umbrella pine
• umbrella plant
• umbrella sedge
• umbrella tent
• umbrella tree