Dictionary
a•breast
Pronunciation: (u-brest'), [key]—
adv., adj.
1. side by side; beside each other in a line:
They walked two abreast down the street.
2. equal to or alongside in progress, attainment, or awareness (usually fol. by
of or
with):
to keep abreast of scientific developments; keeping abreast with the times. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.