Aviation Dictionary
هوای فشرده ای که از موتور گرفته و برای مصارف دیگر همچون استارت ،فشار کابین سیستم تهویه و غیره استفاده میشود
Air bled from one of the stages of the engine compressor and used for some function other than the operation of the engine. These functions include pressurization, deicing, anti-icing, air conditioning, and engine starting.