Meaning of “claustrophobic” - Learner’s Dictionary

claustrophobic

adjective uk us /ˌklɒstrəˈfəʊbɪk/
PERSON

feeling very anxious when you are in a small or crowded place

PLACE

A claustrophobic place makes you feel anxious because it is very small or crowded:

a claustrophobic room

(Definition of “claustrophobic” from the Cambridge Learner’s Dictionary © Cambridge University Press)