Definition of: pillow

(pil′ō) noun
1. A case of cloth stuffed with some yielding material, or inflated with air, used as a support for the head, as in sleeping.
2. Any body rest.
3. One of various supporting blocks or devices, as a journal bearing.
—v.t.
1. To rest on or as on a pillow.
2. To act as a pillow for.
—v.i.
3. To recline as on a pillow. [OE pyle, pylu, ult. <L pulvinus a cushion]
—pil′·low·y adjective