切(き)り込(こ)むto cut deep into, to cut one's way into (an enemy position), to rush on, to raid, to attack, to press someone hard (e.g. with questions), to get to the heart of (a matter)

う-verb (む), Intransitive verb

1. 1.

   to cut deep into

2. 2.

   to cut one's way into (an enemy position), to rush on, to raid, to attack

3. 3.

   to press someone hard (e.g. with questions), to get to the heart of (a matter)