noun
1. : a person who grubs in mud (as in search of stray bits of coal, iron, rope) ; specifically : an urchin who grubs for a living along the tide flats of the English Thames
2.
a. dialect England : pipit
b. : any of various birds (as the meadowlark or the shoveler) that live in moist places
c. : the Australian magpie lark ( Grallina cyanoleuca ) that makes mud nests