補刀

(gaming) to finish off a wounded combatant / (fig.) to attack sb who is already under fire / to pile on / (sphragistics) to retouch a seal after taking a first impression

knife / blade / single-edged sword / cutlass / CL:把[ba3] / (slang) dollar (loanword) / classifier for sets of one hundred sheets (of paper) / classifier for knife cuts or stabs

to repair / to patch / to mend / to make up for / to fill (a vacancy) / to supplement