ALL meanings of groundsill
ground·sill
G g - noun groundsill the lowermost sill of a framed structure, especially one lying close to the ground. 1
- noun groundsill The horizontal beam or timber in a building that is secured to the foundation and is the base for the rest of the structure. 1
- noun groundsill the lowest horizontal timber in the framework of a building 0
- noun groundsill (rare) A timber beam used as the foundation for a building. 0
- noun groundsill The lowest beam of a door-frame; the threshold. 0