a
♦♦♦ a / ə, STRONG eɪ / or an / ən , STRONG æn / A or an is the indefinite article. It is used at the beginning of noun groups which refer to only one person or thing. The form an is used in front of words that begin with vowel sounds. 1 [DET] DET sing-n You use a or an when you are referring to someone or something for the first time or when people may not know which particular person or thing you are talking about. A waiter entered with a tray... He started eating an apple... Today you've got a new teacher taking you... I manage a hotel. 2 [DET] DET sing-n You use a or an when you are referring to any person or thing of a particular type and do not want to be specific. I suggest you leave it to an expert... Bring a sleeping bag... I was waiting for a bus. 3 [DET] DET n-uncount with supp You use a or an in front of an uncount noun when that noun follows an adjective, or when the noun is followed by words that describe it more fully. Ther...