ˈ ̷ ̷ˌ ̷ ̷ noun
1. : the lowest sill of a structure (as of a house, bridge, dam) usually embedded in soil or mud
2. : a person of the lowest stratum of society
a mudsill like me trying to push in and help — Mark Twain
all classes and conditions of society from the millionaire to the mudsill — D.D.Martin