ラッシュアワー
ラッシュアワー · rasshuawaa · JLPT N2 · noun
rush hour
🚃 Rush = 'rush'; ア・ワー sounds like 'our' hour: everyone's OUR hour to be crammed on the train
Katakana loanword from English 'rush hour'. Read it as rasshu + a wa (sounds like 'our') + hour, so the packed commute is when it's OUR hour to rush.