godan verb (-mu), transitive verb
slurp noisily
Describes drinking or eating something liquid or semi-liquid with a loud sucking sound, often used for noodles or soup.
彼はラーメンを勢いよくすすり込んだ。
He slurped up the ramen vigorously.
熱いスープを音を立ててすすり込むのは日本では普通
In Japan, it's normal to slurp hot soup noisily.