Definition of abreast
			
									- adv. - Side by side, with breasts in a line; as, "Two men could
   hardly walk abreast."
 
									- adv. - Side by side; also, opposite; over against; on a line
   with the vessel's beam; -- with of.
 
									- adv. - Up to a certain level or line; equally advanced; as, to
   keep abreast of [or with] the present state of science.
 
									- adv. - At the same time; simultaneously.
 
									- adv. - Side by side, with breasts in a line; as, "Two men could
   hardly walk abreast."
 
									- adv. - Side by side; also, opposite; over against; on a line
   with the vessel's beam; -- with of.
 
									- adv. - Up to a certain level or line; equally advanced; as, to
   keep abreast of [or with] the present state of science.
 
									- adv. - At the same time; simultaneously.