Adjective
Beneath a tail.
Usage- not-comparable
On the underside of the tail.
Usage- not-comparable
- Synonyms
Noun
The ventral part of the tail of a bird.
The underside of a tail.
- Examples
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More examples (1)
The whiptail wallaby is a slender, long-tailed, long-limbed macropod. […] its belly and the base of its undertail are white; the rest of its tail, feet and paws are dark.