mus·te·line 
(mŭstə-līn′, -lĭn)
(mŭstə-līn′, -lĭn)adj.
1. Of, relating to, or resembling the mustelids.
2. Of, relating to, or belonging to the subfamily Mustelinae, which includes the weasels and martens.
[Latin mūstēlīnus, of a weasel, from mūstēla, weasel, probably from mūs, mouse; see mūs- in the Appendix of Indo-European roots.]
muste·line′ n.