swing door

(idiomatic) A piece of cake; an extremely simple thing, something trivial, a cinch, easy as pie.

朝飯前: A piece of cake; an extremely simple thing.

(telephony) a common Japanese telephone greeting: hello; used when answering the telephone / used to confirm that the person being addressed is listening, or to confirm if anyone is listening

put away

(idiomatic) to have luck turn one's way

Alternative spelling of 開け胡麻 (“open sesame”)

open sesame!

peephole (hole in a door through which to look)

Alternative spelling of スイングドア