B737-800
Flight Crew Air Transport Pilot (ATP)
Time Pressure; Situational Awareness; Confusion
Aircraft Equipment Problem Less Severe
Flight Crew Rejected Takeoff
Aircraft
Single runway operations.  I was correcting back to centerline due to a yaw created by the left engine slow to spool.  There was a radio call; presumably from an aircraft on the parallel taxiway that stated 'departure roll; nose gear'; the capt and myself noted it and continued the takeoff.  A few seconds later the tower stated the same thing; at this time the capt elected to abort the takeoff.  We thought the abort speed was around 65-70 knots; it was not until they notified me that the actual speed was 103.  We taxied clear and to the gate without incident.
A B737-800 left engine was slow to spool which caused a yaw and the nose wheel to turn; so the takeoff was rejected. Crew was later notified the reject speed was 103 knots.