tipping

Etymology

tip + -ing

noun

1. The practice of leaving a tip (gratuity).
2. The act by which something is tipped or inclined.
   Hat-tippings and cap-doffings are of course of a different nature to more elaborate verbal greetings. In etiquette manuals they may be described as incentives to a conversation, but in practice they seem to have been quite ceremonial. 2013, Peter Andersson, Streetlife in Late Victorian London: The Constable and the Crowd
3. The dumping of rubbish.
4. (music) A distinct articulation given in playing quick notes on the flute, by striking the tongue against the roof of the mouth; double-tonguing.
5. (Australia) A competition where entrants aim to tip (predict) the outcomes of sporting events.
   Cats fan Mr Burke received a handsome trophy from Balmoral Grove for his feat but is no stranger to cleaning up, having won the tipping at The Break three years in a row and also done well at The National Hotel. 2016-09-16, Danny Lannen, “Grovedale nursing home footy tips king taking it one season at a time”, in The Geelong Advertiser

verb

1. present participle and gerund of tip