chopper
n. countable B2 Upper Intermediate US //ˈtʃɑpɝ// UK //tʃˈɒpɐ// chop·per Informal Slang
n. a helicopter. You use this word in informal speech to sound casual or dramatic.
n. a helicopter, especially in informal or military contexts. Often used to evoke speed, noise, or urgency.
We flew to the island on a small chopper.
The news crew arrived by chopper to cover the breaking story live.
The rhythmic thumping of the chopper blades filled the valley, a sound that had become synonymous with the chaos of the war.
From chop + -er.
From the onomatopoeia for the "chop-chop" sound emitted by the main rotor blades of the Bell 47 'OH-13 Sioux' "Angel of Mercy" helicopter, encountered by troops during the Korean War.