consume food or drink in a relatively quick period of time.
"Hey, stop dicking about... time's ticking, lift that drink and horse it down"

"We're going to miss the bus. Grab that burger and horse it down, you fat bastard"
by phildizzle May 20, 2009
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To eat something with urgency. The faster the better.
Baby Braxton was horsing down his bottle of milk.
by Herc55 September 19, 2015
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