A-brĕast’, adv.
(a-brĕst’), adv. [Prefix a and breast.]
Sense 1. Side by side, with breasts in a line; as, two men rode abreast.
Sense 2. (Naut.) Opposite to; off; over against; — with of; as, abreast of Montauk Point.
Sense 3. At the same time; simultaneously. [Obs.]
Abreast therewith began a convocation. Fuller.