piñón

Etymology 1
From.

Noun

 * 1) pine nut; Araucaria nut
 * 2) pine sapling

Etymology 2
.

Noun

 * 1)  pinion small gear or spindle
 * 2)  sprocket toothed wheel that enmeshes with a chain
 * 1)  sprocket toothed wheel that enmeshes with a chain

Etymology 3
From +.

Noun

 * 1) pinion outer part of a bird's wing