(n) :
the lowest sill of a structure, usually placed in or on the ground; (Figuratively) A particularly low or dirty place/state; the nadir of something (see rock bottom)
"The Pre-Historic Era represented the mudsill of human development."
(n) :
the lowest sill of a structure, usually placed in or on the ground; (Figuratively) A particularly low or dirty place/state; the nadir of something (see rock bottom)
"The Pre-Historic Era represented the mudsill of human development."