DCHP-1 Online
air-line † Obs. 
1 n. a railway line, especially a through or transcontinental line.
2 n. a direct line or route, "as the crow flies"; a beeline.
air-line † Obs.
1 n. a railway line, especially a through or transcontinental line.
2 n. a direct line or route, "as the crow flies"; a beeline.