"ENVENOM"

Usage: envenom { <piercing weapon> | <blaster pistol> }
       envenom { <food> | <drink> }

One can contaminate food or drink with poison to cause sickness and
disease.  A sharp weapon that is envenomed can cause poison damage
during combat.  Bullets that are envenomed can also cause poison damage.

* Public drink supplies (i.e. pumps or fountains) cannot be envenomed.

See also: EXTRACT DETOXIFY POISON