Definition from Wiktionary, the free dictionary
barkless (not comparable)
- Without bark (the tree covering).
- (of a dog) That does not bark.
2008 May 11, Maggie Scarf, “The Fog of Love”, in New York Times:
- Pearlie has managed to acquire a phone that purrs, but doesn’t ring; she has found a breed of barkless dog; she censors the newspapers by cutting out upsetting articles.