buxón

Etymology
Borrowed from.

Noun

 * 1) cork, stopper, plug
 * 2) scupper hole (a drainage hole on the bilge of a boat)
 * 3) lower edge of the chute (in a water mill)
 * 1) lower edge of the chute (in a water mill)
 * 1) lower edge of the chute (in a water mill)