To try to get one's horse into a better position during a horse race.
To try to come out ahead in a competition for something specific or put oneself in a more favourable position generally.
To engage in mock combat on horseback, as two knights in the lists; to tilt.
To touch penises while engaging in a sex act, especially oral sex.
To engage in verbal sparring over an important issue. (used of two people, both of whom participate more or less equally)
A tilting match: a mock combat between two mounted knights or men-at-arms using lances in the lists or enclosed field.