A field mouse is a mouse with a long tail that lives in fields and woods.
field mouse in British English
(fiːld maʊs)
noun
1.
any nocturnal mouse of the genus Apodemus, inhabiting woods, fields, and gardens of the Old World: family Muridae. They have yellowish-brown fur and feed on fruit, vegetables, seeds, etc
2. another name for vole1
field mouse in American English
any of several kinds of mice that live in fields
Examples of 'field mouse' in a sentence
field mouse
He had a dead field mouse in his jaws, and he stepped up to drop it delicately before her shabby leather oxfords.