- noun a projecting part with an opening at the end of a pipe, for regulating and directing a flow of fluid
Cars & Driving
- noun a jet, hole, or special fitting at the end of a pipe for controlling what comes out
- An attachment to the outlet of a pipe or hose that controls or regulates the flow.
- An open-ended hollow metal or plastic cone in varying sizes used in the end of a piping bag. The smaller end may be a plain circle, star-shaped or other shapes to give different decorative effects.