Drain
From MUME
Orcs and Trolls can fill their skin, or any drink container they have, with the blood of their fallen enemies.
The blood is a tasty beverage for the Orcs; if they need to keep it for a longer duration, or for a use as ingredient for a herblore, they have to ask one of their wise leaders to transform it into a more stable form.
Syntax: 'drain corpse'
See also: Bury, Burn, Decapitate, Drain, Hang