Definitions from Wiktionary (blue hole)
▸ noun: A submarine cave or sinkhole, a roughly circular, steep-walled depression that is typically anoxic below a certain depth.
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▸ noun: A submarine cave or sinkhole, a roughly circular, steep-walled depression that is typically anoxic below a certain depth.
Similar:
sinkhole,
earthhole,
well,
hole,
glory hole,
watering hole,
coal hole,
coalhole,
spider hole,
overflow hole,
more...
Opposite:
Phrases:
▸ Words similar to blue hole
▸ Usage examples for blue hole
▸ Idioms related to blue hole
▸ Wikipedia articles (New!)
▸ Words that often appear near blue hole
▸ Rhymes of blue hole
▸ Invented words related to blue hole