B737 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP)
Communication Breakdown
Conflict Ground Conflict; Critical; Deviation / Discrepancy - Procedural Clearance
General None Reported / Taken
Human Factors
While holding short of Runway on taxiway 'C' a light civil aircraft passed our aircraft on the right side after being told by ground to go around our aircraft on the left side.  We were holding on taxiway 'C' offset to the right of the centerline in case an aircraft had to clear the Runway at 'C' due to numerous taxiway closures.  The aircraft had to pass under part of our right wing and being equipped with the split winglets there was a real danger of the aircraft contacting our right winglet.
B737 Captain reports a light civil aircraft passing his aircraft on the right with wing overlap (underlap) due to taxiway confines. Being equipped with the split winglets (scimitar); there was a real danger of the aircraft contacting the right lower winglet.