1
a hazelnut
hazelnut 是可数名词，单数前常用 a/an。
She ate a hazelnut.
她吃了一颗榛子。
榛树；榛
先理解核心含义，再看它在真实句子里的用法。
榛树；榛
a shrub or small tree of the genus Corylus that bears edible nuts in a leafy husk
She ate a hazelnut.
她吃了一颗榛子。
榛树的果实,尤指商业种植的欧洲榛(Corylus avellana)的果实
The fruit of the hazel, especially of species Corylus avellana, which is grown commercially.
榛属的几种灌木或小乔木,结有被叶状苞片包裹的可食用坚果
any of several shrubs or small trees of the genus Corylus bearing edible nuts enclosed in a leafy husk
榛属多种树木的坚果
nut of any of several trees of the genus Corylus
She added a handful of chopped hazelnuts to the salad.
她在沙拉里加了一把切碎的榛子。
I bought some hazelnuts at the market to make a cake.
我在市场买了一些榛子来做蛋糕。
This chocolate bar has a smooth hazelnut filling.
这块巧克力棒有顺滑的榛子夹心。
hazelnut 是可数名词，单数前常用 a/an。
She ate a hazelnut.
她吃了一颗榛子。
复数 hazelnuts 表示多颗榛子；some 后接可数名词复数。
He put some hazelnuts in the cake.
他在蛋糕里放了一些榛子。
hazelnut 作定语修饰名词时用单数，表示“榛子味的/榛子制的”。
This is a hazelnut spread.
这是一种榛子酱。
Not this
The cake is full of hazelnut.
Use this
The cake is full of hazelnuts.
hazelnut 是可数名词，表示多颗榛子时要用复数形式 hazelnuts；单数形式只表示一颗或作为名词修饰语，不能表达复数意义。
Not this
Her eyes are hazelnut.
Use this
Her eyes are hazel.
描述眼睛淡褐色应用形容词 hazel；hazelnut 是名词“榛子”，不是颜色形容词，不能作表语描述颜色。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
榛树
The hazelnut tree grows wild in many parts of Europe.
榛树在欧洲许多地方野生生长。
榛子酱
He made a sandwich with hazelnut butter and banana.
他用榛子酱和香蕉做了一个三明治。
烤榛子
Roasted hazelnuts are often added to salads and desserts.
烤榛子常被添加到沙拉和甜点中。
榛子巧克力
This hazelnut chocolate bar is my favorite snack.
这款榛子巧克力棒是我最喜欢的零食。
榛子口味
Would you like a hazelnut flavor latte?
您想要一杯榛子口味拿铁吗？
榛子油
Hazelnut oil gives the salad a rich and nutty taste.
榛子油给沙拉增添了浓郁的坚果香味。
她的战车是一颗空榛子壳，由会做木匠活的松鼠或老蛀虫制成。
From Mercutio's 'Queen Mab' speech in Shakespeare's Romeo and Juliet, Act 1, Scene 4: a famous miniature description in which the fairy queen's tiny chariot is carved from an empty hazelnut shell, illustrating how the word suggests small, delicate things.
出自莎士比亚《罗密欧与朱丽叶》第一幕第四场中茂丘西奥的“麦布女王”独白：这段著名的微型世界描写中，仙女女王的小巧战车由一颗空榛子壳制成，显示该词常让人联想到小巧精致之物。
Use hazelnut naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
拆成 hazel（淡褐色）+ nut（坚果）：榛子果壳呈淡褐色，记住 hazel 的棕褐色就记住了榛子。
语域：neutral 常见场景：烹饪、食品标签、植物学 该词通常为中性表达，日常饮食、食品配料表及植物学描述中都比较常见，正式与非正式场合均可使用。
这些词与 hazelnut /ˈheɪzəlˌnʌt/ 最后的 /nʌt/ 音相同：nut、but、cut、gut、hut、shut。注意形近音不同的词，如 put /pʊt/；且 hazel 读作 /ˈheɪzəl/，不是 /ˈhæzəl/。
Dictionary facts from ECDICT, WIKTIONARY.