[L. pulvinar; from L. pilus, hair, or from stuffing.]

1. A long cushion to support the head of a person when reposing on a bed; a sack or case filled with feathers, down or other soft material.

2. In a ship, the block on which the inner end of a bowsprit is supported.

The pillow of a plow, is a cross piece of wood which serves to raise or lower the beam.