IPA: /ˈɛəˌlaɪnə/
KK: /ˈɛrˌlaɪnər/
A large aircraft designed for transporting passengers over long distances, usually operated by a commercial airline.
The airliner took off smoothly from the runway, ready to transport hundreds of passengers.
Airliner → It is formed from "air" (from Old English "aer", meaning the atmosphere or sky) and "liner" (from the word "line", meaning a vessel or vehicle that operates on a regular route). The word "airliner" refers to a vehicle that operates on a regular route in the air.
Think of 'air' as the atmosphere and 'liner' as a vehicle on a route — an airliner is a vehicle that travels through the air on a set path.