American English

Definition of cavernous adjective from the Oxford Advanced American Dictionary

 

cavernous

 adjective
adjective
NAmE//ˈkævərnəs//
 
(formal)
 
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(of a room or space) very large and often empty and/or dark; like a cave the vast, cavernous space of the empty concert hall
See the Oxford Advanced Learner's Dictionary entry: cavernous