CEDICT
Wiktionary
植物名。芸香科柑橘屬，常綠灌木。產於熱帶，果實橢圓，成熟後色黃、味酸，可作飲料，也可供藥用，皮可製油。
重編國語辭典
維基詞典
Lemon is sour.
Source: Tatoeba
Lemons are sour.
These lemons are fresh.
The lemon is yellow.
The lemon has a flavor all of its own.