蝶番: hinge

hinge / joint, especially anatomical joint

to break, to be broken, to be destroyed, to be wrecked / to fall through; to be broken off / (informal) to go mad; to lose it

a revolving door

室外: outside a room, outdoor / 膝蓋: patella, kneecap

(poetic) pair

stem or continuative form of つがう (tsugau) [godan]

indicates that something undesirable was done or happened

to close / to finish, do something completely / to put away, to put an end to / is, or was (with conjugation), done completely / happens, or happened, unexpectedly / is done with difficulty

traditional folk song of Amami / (more broadly) traditional folk song of Okinawa