名詞 locust:

1. migratory grasshoppers of warm regions having short antennae
2. hardwood from any of various locust trees
3. any of various hardwood trees of the family Leguminosae
   同義詞：locust tree

1. Locust had stripped the leaves off the trees.
   蝗蟲把樹上的葉子都吃光了。
2. A locust is a kind of destructive insect.
   蝗蟲是一種害蟲。
3. The locust swarm has destroyed all the crops and vegetables.
   蝗蟲群毀壞了所有的莊稼和蔬菜。

lo.cust

n.（名詞）
Any of numerous grasshoppers of the family Acrididae, often migrating in immense swarms that devour vegetation and crops.
蝗蟲：蝗科的一種蝗蟲，經(jīng)常大批遷徙，將所到之地所有植物和莊稼吃光
The seventeen-year locust.
十七年蟬

Any of several North American deciduous trees of the genusRobinia, especially R. pseudoacacia, having compound leaves, drooping clusters of fragrant white flowers, and durable hard wood.
洋槐：一種北美落葉樹（洋槐屬）。 尤指 洋槐， 生有復葉，花呈白色、下垂并有香味，木質耐用堅硬
Any of several similar or related trees, such as the honey locust or the carob.
洋槐：類似或相關的幾種樹，如美洲皂莢或稻子豆樹
The wood of one of these trees.
洋槐木：這些樹的一種木材

來源：
Middle English
中古英語
from Old French locuste
源自 古法語 locuste
from Latin locusta
源自 拉丁語 locusta
[Sense 3a, probably from the resemblance of its fruit to a locust]
[釋義3ａ可能源于其果實與蝗蟲相似]