Obs. rare. Also vaunchace. [f. van- (see VANT-) + CHASE sb.1 Cf. VAUNT-CHASE.] The van, front, or advanced part of the chase or hunt. So † Vanchaser, a hound hunting in the van. Obs.
c. 1410. Master of Game (MS. Digby 182), Prol. He hath ynogh at done to loke which houndes ben vanchasours and perfiters. Ibid. He shal se, whiche houndes commeth in the vanchace [Bodl. MS. vaunchace] and the myddell and whiche ben perfitours.