Define Stunlock Meaning

When someone keeps talking to you and keeps bringing up new topics when you want to leave, usually a one-sided conversation.
The person talking to you is preventing you from taking any action.

The art of chaining up stun abilities, often in an mmorpg, in order to completely prevent an oponent from using any actions

In the MMORPG World of Warcarft, Stunlock is a way to beat your opponents by keeping them under your stuns a whole fight, a stunlock.
an example of a stunlock combo
Cheapshot->Sinister strike->Kidney shot, blind, restelth, cheapshot, SinisterStrike, kidneyshot