1. Tree (as opposed to shrub)
   "They planted an arbor of fruit trees in the backyard";
   - arbour [Brit, Cdn]
    
2. A framework that supports climbing plants
   "the arbor provided a shady resting place in the park";
   - arbour [Brit, Cdn], bower, pergola
    
3. Any of various rotating shafts that serve as axes for larger rotating parts
   "The machinist used an arbor to shape the cylindrical workpiece";
   - spindle, mandrel, mandril, arbour [Brit, Cdn]

Derived forms: arbors

Type of: frame, framework, rotating shaft, shaft, tree

Part of: drive

Encyclopedia: Arbor, Texas