An oval fruit with pale yellow skin and very acid juice.

柠檬。

The tree, related to the orange, which bears this fruit.

柠檬树。

A pale yellow color.

淡黄色。

Person or thing extremely disappointing in performance.

【俚】表现差劲的家伙；劣等的(无价值的)货色。

Flavored with lemon, or colored like a lemon.

柠檬味的；柠檬色的。