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crabapple + noun
crabapple 作定语修饰名词，常与 tree、jelly、blossom 等搭配。
She bought a crabapple tree for her garden.
她给花园买了一棵海棠树。
海棠果；沙果
先理解核心含义，再看它在真实句子里的用法。
海棠果；沙果
a small sour apple, or the tree that bears it
She bought a crabapple tree for her garden.
她给花园买了一棵海棠树。
苹果属野生苹果树,通常结小而苦的果实(与家苹果相比)
Any of the wild species of apple tree, genus Malus, which generally yield small, bitter fruit (in comparison to domestic apples, Malus domestica).
这种树的果实
The fruit of this tree.
令人讨厌的人；坏脾气的人
An unpleasant person; a person who is crabby.
In autumn, the crabapple tree in our yard is full of small red fruits.
秋天，我们院子里的海棠树挂满了红色的小果子。
My grandmother makes delicious jam from the crabapples she picks in the park.
我奶奶用她在公园里摘的海棠果做美味的果酱。
These crabapples are too sour to eat raw, but they are perfect for making preserves.
这些海棠果太酸了，不能生吃，但非常适合做蜜饯。
crabapple 作定语修饰名词，常与 tree、jelly、blossom 等搭配。
She bought a crabapple tree for her garden.
她给花园买了一棵海棠树。
crabapple 是可数名词，指果实；复数形式 crabapples 泛指许多果实。
These crabapples are too sour to eat raw.
这些沙果太酸，不能生吃。
be used for 后接名词或动名词，表示某个事物的用途。
Crabapples are used for preserves and jellies.
沙果用于制作蜜饯和果酱。
Not this
I ate crabapple yesterday.
Use this
I ate a crabapple yesterday.
crabapple 是可数名词，单数形式不能裸用，前面需要加 a/an；汉语里“海棠果”没有冠词概念，所以容易漏掉冠词。
Not this
This tree is crabapple.
Use this
This is a crabapple tree.
crabapple 是名词，不能直接作表语形容词来表示“是海棠（树）”；应说 a crabapple tree，让 crabapple 作定语修饰 tree。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
海棠树
The crabapple tree in our backyard blooms every spring.
我们后院的海棠树每年春天开花。
海棠花
The crabapple blossoms attract many bees.
海棠花吸引了许多蜜蜂。
海棠果酱
My grandmother makes delicious crabapple jelly from the fruit in her garden.
我奶奶用她园子里的海棠果制作美味的海棠果酱。
观赏海棠
A flowering crabapple is a popular choice for small gardens.
观赏海棠是小型花园的常见选择。
海棠果
The crabapple fruit is too sour to eat raw, but it makes excellent preserves.
海棠果生吃太酸，但做成果酱却非常好。
海棠果园
They planted a crabapple orchard near the village.
他们在村子附近种了一片海棠果园。
Use crabapple naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 crab（螃蟹）和 apple（苹果）拼在一起记：野沙果又小又酸，像螃蟹一样横着结在树上。
语域：neutral 常见场景：garden and orchard、cooking and preserving、botany crabapple 是中性常用词，多用于园艺、烹饪（如制作果酱或蜜饯）和植物描述等场合，口语和书面语中都自然，无需特别在意正式程度。
可指果实、栽培品种或野生苹果树。
Dictionary facts from ECDICT, WIKTIONARY.