A Scottish surname originating as an occupation for someone who sold table linen, or was in charge of the linen of a great house. / John Napier, Scottish mathematician etc.

(arithmetic) Napier's bones

(arithmetic) A set of numbered rods used for multiplication and division (see the Wikipedia article for a fuller explanation).

plural of Napier grass

Pennisetum purpureum, a perennial tropical grass native to Africa.