Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun bougainville_trench

1 sense of bougainville trench

Sense 1
Bougainville Trench -- (a depression in the floor of the Pacific Ocean between New Guinea and the Solomon Islands)
       INSTANCE OF=> trench, deep, oceanic abyss -- (a long steep-sided depression in the ocean floor)