Learn how to say Cocktail correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word cocktail:
any mixed drink with a spirit base, usually drunk before meals
(as modifier) ⇒ the cocktail hour
an appetizer of seafood, mixed fruits, etc
any combination of diverse elements, esp one considered potent
(modifier) appropriate for formal occasions ⇒ a cocktail dress
C19: of unknown origin