I. ˈkwī(-ə)r noun
Etymology: Middle English quair four sheets of paper folded once, collection of sheets, from Anglo-French quaier, from Vulgar Latin * quaternum set of four, from Latin quaterni four each, set of four — more at quaternion
Date: 15th century
: a collection of 24 or sometimes 25 sheets of paper of the same size and quality : one twentieth of a ream
II.
archaic variant of choir