peephole (hole in a door through which to look)

a revolving door

observe

observation

Western-style door

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

外, 他: other, the rest

(the) outside