advb. phr. [A prep.1 8 b + WEEK; cf. a-day.] In every week; weekly.
1547. Boorde, Brev. Health, § 133. Ones a weke anoynt the face.
1704. Cibber, Careless Husb., II. i. I usd to dine there once a-week.
1841. Gen. P. Thompson, Exerc. (1842), VI. 163. The poor, the men of nine shillings a week or less.