ven ‧ om /ˈvenəm/ BrE AmE noun [uncountable]
[ Date: 1200-1300 ; Language: Old French ; Origin: venim , from Latin venenum 'use of magic power, drug, poison' ]
1 . great anger or hatred SYN malice :
There was real venom in her voice.
a look of pure venom
2 . a liquid poison that some snakes, insects etc produce when they bite or sting you:
The viper paralyses its prey by injecting it with venom.