noun
air cushion; inflatable pillow
Refers to a cushion or pillow that is inflated with air, often used for travel, medical support, or comfort.
長時間のフライトには空気枕があると便利だ。
An inflatable pillow is handy for long flights.
Compound of 空気 (kūki, 'air') and 枕 (makura, 'pillow'). The reading くうきまくら follows standard rendaku rules.