Emily Dickinson Lexicon

GLUE, n. [glu; Fr. glu; W. glyd; Arm. glud; Ir. glydh, gliu, gleten; L. gluten; Gr. γλια; Russ. klei. See Class Ld, No. 8, 9, 10.]

Inspissated animal gluten; a tenacious, viscid matter, which serves as a cement to unite other substances. It is made of the skins, parings, &c. of animals, as of oxen, calves or sheep, by boiling them to a jelly. Encyc. Parr.