Is “Quire” a Scrabble word?
Yes
QUIRE
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Quire
/ˈkwaɪ.ə(ɹ)/
noun
1.One-twentieth of a ream of paper; a collection of twenty-four or twenty-five sheets of paper of the same size and quality, unfolded or having a single fold.
2.A set of leaves which are stitched together, originally a set of four pieces of paper (eight leaves, sixteen pages). This is most often a single signature (i.e. group of four), but may be several nested signatures.
3.A book, poem, or pamphlet.
verb
1.To prepare quires by stitching together leaves of paper.