ichidan verb, intransitive verb
sleep like a log; sleep deeply
Emphasizes being so deeply asleep that one is unaware of surroundings; often used when someone is hard to wake up.
疲れていたので、ベッドに入るとすぐに眠りこけてしまった。
I was so tired that I fell into a deep sleep as soon as I got into bed.
彼はソファ
He was sleeping like a log on the sofa and didn't notice the phone ringing.