What is the meaning of Tipping?

The practice of leaving a tip (gratuity).

The act by which something is tipped or inclined.

The dumping of rubbish.

A distinct articulation given in playing quick notes on the flute, by striking the tongue against the roof of the mouth; double-tonguing.

A competition where entrants aim to tip (predict) the outcomes of sporting events.

present participle and gerund of tip

Source: wiktionary.org