Definition that contains underfur
- seal the pelt or fur (especially the underfur) of a seal
- sealskin the pelt or fur (especially the underfur) of a seal
- golden mole mole of southern Africa having iridescent guard hairs mixed with the underfur
- guard hair coarse hairs that form the outer fur and protect the underfur of certain mammals
- eared seal pinniped mammal having external ear flaps and hind limbs used for locomotion on land; valued for its soft underfur
- fur seal eared seal of the southern hemisphere; the thick soft underfur is the source of sealskin