legroom
US
UK legroom n: (transport: enough space for one's legs) (交通工具中)
SC 可供伸腿的空间 kě gōng shēn tuǐ de kōng jiān
These seats have a lot more legroom than the ones in economy.
leg room n: (space to move one's legs)
SC 腿部空间，伸腿空间
Let´s sit in the emergency exit row, because there´s more leg room there.