名詞 lobster:

1. flesh of a lobster
2. any of several edible marine crustaceans of the families Homaridae and Nephropsidae and Palinuridae

1. The lobster is a shellfish.
   龍蝦是水生貝殼動物。
2. I like lobster but it doesn't like me.
   我喜歡吃龍蝦，但吃了身體不適。
3. Lobster has eight legs and two long claws.
   龍蝦有八條腿兩條爪子。
4. Lobsters turn scarlet when they are boiled.
   龍蝦在被煮熟的時候會變紅。

lob.ster

n.（名詞）
Any of several edible marine crustaceans of the family Homaridae, especially of the genusHomarus, having stalked eyes, long antennae, and five pairs of legs, the first pair of which is modified into large pincers.
大螯蝦：螯龍蝦科的各種可食海生甲殼類動物，尤指螯龍蝦屬 ，有柄眼，長觸須和五雙腿，第一雙腿變異為大鉗
Any of several crustaceans, such as the spiny lobster, that are related to the lobsters.
龍蝦：與大螯蝦有親緣關(guān)系的任一種甲殼類動物，如龍蝦
The flesh of a lobster used as food.
龍蝦肉：食用的龍蝦肉
n.attributive.（定語名詞）
Often used to modify another noun:
常用于修飾另一個各詞：
例句：
a lobster dinner; lobster boats.
龍蝦宴；龍蝦船

v.intr.（不及物動詞）
lob.stered,lob.ster.ing,lob.sters
To search for and catch lobsters.
捕捉龍蝦：尋找并捕捉龍蝦

來源：
Middle English lopster, lobstere
中古英語 lopster, lobstere
from Old English loppestre
源自 古英語 loppestre
alteration perhaps influenced by loppe, lobbe [spider]
可能受 loppe的影響, lobbe [蜘蛛]
of Latin locusta
拉丁語 locusta的變化

【引伸】
lob.sterer
n.（名詞）
<注釋>A lobster and a locust may share a common source for their name,that is, the Latin wordlocusta, which was used for the locustand also for a crustacean that was probably a kind of lobster.We can see thatlocusta would be the source of locust, but it looks like an unlikely candidate as the source oflobster. It is thought, however, that Old Englishloppestre, the ancestor of lobster, was formed from locusta and the suffix-estre used to make agent nouns (our -ster ). The change from Latinlocusta to Old English loppestre may have been influenced by Old English loppe, meaning .spider..
龍蝦和蝗蟲的名字可能源于同一出處，即拉丁詞Locusta ， 它用于指蝗蟲，也用于表示可能是一種龍蝦的甲殼類動物。我們可以看到，Locusta 可能是 locusa 的來源， 但不象是lobster 的來源。 但是，lobster 在古英語里的前身 loppestre 被認(rèn)為是由 locusta 形成的， 后綴-estre 用于組成代理者的名詞（現(xiàn)在的 -soer ）。 從拉丁文locusta 到古英語 loppstre 的變化可能受古英語 loppe 的影響（意為.蜘蛛.）