noun
1. : any of numerous small arboreal myomorph rodents: as
a. : any African long-clawed murid of Dendromus or related genera
b. : either of two cricetids of western No. America that are congeneric with the lemming mice
c. : any of a genus ( Vandeleuria ) of tropical eastern Asian climbing murids with very long tails and the great toe of the hind foot opposable and resembling a thumb
2. : white-breasted nuthatch