Expressions (phrases, clauses, etc.), Godan verb with 'mu' ending
to have one's breath taken away; to gasp (in surprise, wonder, etc.); to have one's breath catch in one's throat; to gulp
カール・ランジの記録破りの幅跳びに、観衆は息を呑んだ。Karl Lange's record breaking long jump took the crowd's breath away.
Also written 息をのむ【いきをのむ】、息を飲む【いきをのむ】