1. the lowest sill of a structure, typically resting on or in the ground
Usage: construction
2. a person of the lowest social class
Usage: archaic; offensive

Examples

• The carpenter checked that the mudsill was level before continuing construction.
• Workers placed the mudsill directly on the concrete foundation.
• The old barn’s mudsill had rotted from years of ground moisture.
• Proper treatment of the mudsill prevents water damage to the structure.
• The foundation crew installed pressure-treated lumber for the mudsill.