stoma

One of the tiny pores in the epidermis of a leaf or stem through which gases and water vapor pass.

A 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.

From a large tote bag sat beside her, she takes out a Victoria Beckham makeup bag, which contains her urostomy night bag, which plugs into the bag on the stoma.

A mouthlike opening, such as the oral cavity of a nematode.

An artificial anus.