lobster
 US /ˈlɑːb.stɚ/
 UK /ˈlɑːb.stɚ/

1. 
langosta
a large marine crustacean with a cylindrical body, stalked eyes, and the first of its five pairs of limbs enlarged into pincers. Lobsters are important as food.
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We ordered a whole steamed lobster for dinner.
Pedimos una langosta entera al vapor para la cena.
• 
The chef prepared a delicious lobster bisque.
El chef preparó una deliciosa sopa de langosta.