Dictionary entry

Joust

Webster's Dictionary 1913

Joust (?), v. i. [OE. justen, jousten, OF. jouster, jouster, joster, F. jouter, fr. L. juxta near to, nigh, from the root of jungere to join. See Join, and cf. Jostle.] To engage in mock combat on horseback, as two knights in the lists; to tilt. [Written also just.]

For the whole army to joust and tourney. Holland.