AVISE v. 3 definitions
To advise; to counsel. [Obs.] Shak. To avise one's self, to consider with one's self, to reflect, to deliberate. [Obs.] Chaucer. Now therefore, if thou wilt enriched be, Avise thee well, and change thy willful mood. Spenser.
SNAIL n.
[in] taking or sieging of castle or of city, as snails, that was naught else but hollow pavises and targets, under the which men, when they fought, were heled [protected], . . . as the snail is in his house; therefore they cleped them snails. Vegetius (Trans.).