sleepiness; drowsiness
the sandman; Morpheus
昼食後、睡魔に襲われた。
After lunch, I was suddenly overcome by drowsiness.
試験勉強中、睡魔と必死に戦った。
While studying for exams, I desperately fought against drowsiness.
長距離運転中、睡魔に勝てず休憩した。
While driving long distances, I couldn't overcome drowsiness and took a break.