Definify.com
Webster 1913 Edition
Water pore
Wa′ter poreˊ
,1.
(Zool.)
A pore by which the water tubes of various invertebrates open externally.
2.
(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.