noun: (now rare, chiefly historical) One who scavenges in river or harbor mud for items of value, especially in London.
noun: A child who plays in the mud; a child that spends most of its time in the streets, a street urchin.
noun: (slang) A soldier of the Royal Engineers.
noun: (UK, regional) Any of various birds that are found in muddy places or build their nests with mud, especially Anthus petrosus and Alauda arvensis.
noun: (Australia) The Grallina cyanoleuca that builds its nest with mud into a bowl-like shape.
noun: A racehorse that performs well on muddy or wet tracks.
verb: (intransitive) To scavenge in river or harbor mud for items of value.