ON THE BEAM

{adv.} or {adj. phr.} 1. (Of an airplane) In the radio beam that marks the path to follow between airports; flying in the right direction. * /A radio signal tells the pilot of an airplane when he is flying on the beam./ 2. {slang} Doing well; just right; good or correct. * /Kenneth's answer was right on the beam./ Contrast: OFF THE BEAM.