—n.
1 the act or an instance of piping, esp. whistling or singing.
2 a thin pipelike fold used to edge hems or frills on clothing, seams on upholstery, etc.
3 ornamental lines of icing, cream, potato, etc. on a cake or other dish.
4 lengths of pipe, or a system of pipes, esp. in domestic use.
—adj. (of a noise) high; whistling.
Phrases and idioms:
piping hot very or suitably hot (esp. as required of food, water, etc.).
Useful english dictionary. 2012.