uncase

To skin or flay.

To strip (someone); to undress.

Sancho Panza seeing the fryar on the ground, leaped from his ass with great agility, and beginning to uncase him [translating quitar los habitos] with the utmost dexterity, two of their servants came up, and asked for what reason he stripped their master?

To take out of a case or covering; to uncover.

To display, or spread to view, as a flag, or the colors of a military body.