1) Snake farm supply 
Antivenom (or antivenin or antivenene) is a biological product used in the treatment of venomous bites or stings. Antivenom is created by milking venom from the desired snake, spider or insect. The venom is then diluted and injected into a horse, sheep, rabbit, or goat. The subject animal will undergo an immune response to the venom, producing ant...
<pharmacology> A medication that contains an antibody, specific to a toxin, for the purpose of deactivating its harmful effect. ... (13 Nov 1997) ... 
see antivenin.
antivenom Another form of antivenin.
n. substance of immunological origin, whose action counters that of venom