Noun
Verb (する, transitive)
1. (attacking and) sinking (a ship); sending (a ship) to the bottom
Noun
Verb (する, intransitive)
Colloquialism
2. crushing defeat; utter failure; getting shot down (e.g. after a confession)
3. complete exhaustion; collapsing (onto a bed, desk, etc.); passing out (e.g. from alcohol)