Definitions
1.nounOne of the tiny pores in the epidermis of a leaf or stem through which gases and water vapor pass.
2.nounA small opening in a membrane; a surgically constructed opening, especially one in the abdominal wall that permits the passage of waste after a colostomy or ileostomy.
3.nounA mouthlike opening, such as the oral cavity of a nematode.
4.nounAn artificial anus.