2. Noun. One who scavenges in river or harbor mud for items of value, especially in London during the Industrial Revolution. Also applies to a person scavenging sewers. A person that begs near a river. (rare) A sewer cleaner. (rare) ¹
3. Noun. A child who spends most of their time in the streets especially in slum areas. A child who plays in the mud. Any dirty or unkempt person. ¹
4. Noun. Nickname for a soldier of the Royal Engineers. ¹
5. Noun. Assorted birds that are found in muddy places or build their nests with mud. Especially Anthus petrosus and Alauda arvensis. ¹
6. Noun. (Australian) The Grallina cyanoleuca that builds its nest with mud into a bowl like shape. ¹
7. Noun. A racing horse that performs well on muddy or wet tracks. ¹
¹ Source: wiktionary.com
Definition of Mudlark
1. a street urchin [n -S]