What is "alnager"

Alnager \Al"na*ger\, n. [See Alnage.] A measure by the ell; formerly a sworn officer in England, whose duty was to inspect and measure woolen cloth, and fix upon it a seal.

n. 1 A measure by the ell. 2 (context historical English) A sworn officer in England, whose duty was to inspect woollen cloth and fix a seal upon it.