A person employed to catch and kill moles; a mole-catcher.
Late 19th century; earliest use found in Robert Cole (1831–1921). From mole + -er.
A kind of diatomaceous earth found in Denmark and used elsewhere as a building material for its lightness and heat resistance.
Early 20th century; earliest use found in Chemical Abstracts. From Danish moler) from Danish regional (northern) mo loose chalky soil + Danish ler loam, clay.