Meaning of harvest mouse

har'vest mouse"

Pronunciation: [key]
  1. an Old World field mouse, Micromys minutus, that builds a spherical nest among the stems of grains and other plants.
  2. any of several New World mice of the genus Reithrodontomys having similar habits.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.