1. the small projections on the breasts of mammals through which milk is discharged
Usage: anatomical term
2. small projections or fittings resembling nipples in shape or function
Usage: technical

Examples

• The baby bottle has a soft rubber nipple.
• Nursing mothers may experience soreness in their nipples.
• The mechanic replaced the grease nipples on the machinery.
• The water bottle has a pull-push nipple for easy drinking.
• Medical professionals recommend proper care for nursing nipples.
• The hydraulic system uses nipples to connect the hoses.