| 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. |
| Noun | 1. | water pore - a pore that exudes water on the surface or margin of a leaf of higher plants Synonyms: hydathode, water stoma |