Definition of cubicle noun from the Oxford Advanced Learner's Dictionary

cubicle

noun
ˈkjuːbɪkl
 
; ˈkjuːbɪkl
 
 
a small room that is made by separating off part of a larger room
a shower cubicle (British English) a changing cubicle (= for example at a public swimming pool) (especially North American English) an office cubicle