air·line 
/ˈeɚˌlaɪn/ noun
plural air·lines /ˈeɚˌlaɪn/ noun [count] : a company that owns and operates many airplanes which are used for carrying passengers and goods to different places
▪ a major airline — often used before another noun ▪ an airline pilot ▪ airline passengers
▪ a major airline — often used before another noun ▪ an airline pilot ▪ airline passengers
