[noun]a letter of application [U]Free information will be sent out on application to (= if you ask) the central office. [U]I've sent off applications for four different jobs. [C]Have you filled in the application form for your passport yet?South Africa has submitted an application to host the World Cup. [C + to infinitive]
APPLICATION
Meaning of APPLICATION in English
Cambridge English vocab. Кембриджский английский словарь. 2012