teat

This term describes a specialized anatomical or mechanical projection designed for the delivery of fluids. In biological contexts, it is a technical and precise term for the mammary nipple, often used in veterinary or agricultural settings to avoid the more human-centric connotations of nipple.

When applied to inanimate objects, the word evokes the image of a narrow, tapered outlet. Whether referring to a baby bottle or a watering can, the term emphasizes the functional role of controlling flow through a small, flexible or rigid aperture.