The Collaborative International Dictionary
Water pore
Water pore \Wa"ter pore`\,
(Zo["o]l.) A pore by which the water tubes of various invertebrates open externally.
(Bot.) One of certain minute pores in the leaves of some plants. They are without true guardian cells, but in other respects closely resemble ordinary stomata.
--Goodale.
WordNet
water pore
n. a pore that exudes water on the surface or margin of a leaf of higher plants [syn: hydathode, water stoma]