a tropical American tree(Persea americana) having oval or pear-shaped fruit with leathery skin,yellowish-green flesh,and a large seed

• 鳄梨树，一种热带美洲乔木，（美国鳄梨鳄梨属）有椭圆形或梨形果实，果皮坚韧，果肉黄绿色，核大