Leek：

Macmillan English Dictionary
leek
/li:k/ noun [c] a long thin vegetable that tastes similar to an onion and is white at one end with green leaves at the other.

牛津高級英英英漢雙解辭典
leek
/li:k ; lik/ n. onion-like vegetable with a longslender white bulb.青蔥的一種；韭。

那，它到底是蔥還是韭？