1. Joist that receives the end of a header in floor or roof framing in order to leave an opening for a staircase or chimney etc.
   - trimmer

Derived forms: trimmer joists

Type of: joist

• Microgramma-piloselloides
• micrograph
• micrography
• microgravity
• microhabitat
• Microhylidae
• microinstruction
• microlending
• microlight
• microlite
• microlith
• microlithic
• microloan
• micromanage
• micromanipulation
• Micromeria
• Micromeria chamissonis
• Micromeria douglasii
• Micromeria juliana
• micrometeor
• micrometeoric
• micrometeorite
• micrometeoritic
• micrometeoroid
• micrometer