expression, ichidan verb
get something in one's hands; take possession of; make one's own
Literally 'to put into one's hands'; used when someone gains control, secures, or acquires something valuable or desired, often after effort or competition.
彼はついに念願のポストを手中に収めた。
He finally got the long-coveted position in his hands.
The operation to take possession of the enemy fortress began.