Quell is a verb.
The king sent his army to quell the rebellion in the province.
The police were called out to quell the riot.
"Police were sent to quell the riot."
To quell bleeding, cauterize the wound.
The police had been called in to quell a minor disturbance.
The police were able to quell the riot.
Quell your impulse to tie your sister's pigtails to the bedpost.
The dictator is trying to quell the rebellion.
Do you mean the 2nd Quarter Quell or the Quarter Quell in the 2nd book (which is called Catching Fire). The 2nd Quarter Quell was double the tributes (so instead of 24 tributes, there was 48). The Quarter Quell in Catching Fire was to use victors as tributes.
The principal held a meeting in order to quell the rumors about the school closing. A few potato chips will do nothing to quell my hunger. King George could do nothing to quell the colonist's uprising.
The police used pepper spray to quell the riot.