Boosting
Cheating to level up quickly
Call of Duty
FMJ
Full metal jacket
TK
Team kill
SOH
Slight of hand
Ammo
Ammunition
HS
Headshot
Domed
Shot in the head
CTF
Capture the flag
TDM
Team deathmatch
Turtling
Being cautious or protective in one’s approach
KDR
Kill death ratio
ADS
Aiming down sight
Deagle
Desert Eagle
360-noscope
360 no scope
Ak
AK-47