GREAT BARRIER REEF(noun)Did you mean?RhymesAlso try..reefgreatbarrierDefinitions There is 1 meaning of the phrase Great Barrier Reef. Great Barrier Reef - as a noun The largest coral reef in the world; in the coral sea off the northeastern coast of australia Word Variations & RelationsStarts GStarts GRStarts GREStarts GREAEnds FEnds EFEnds EEFEnds REEFStarts G & ends FStarts GR & ends FStarts G & ends EFA-Z Proximitiesgreasiness11greasinesses13greasing10greasy10great6 Great Barrier Reef great-auntgreat-nephewgreat-niecegreat-unclegreatcoat12