ESL /ˌiː es ˈel/ BrE AmE noun [uncountable]
(English as a Second Language) the teaching of English to people who are living in an English-speaking country but whose first language is not English
ESL /ˌiː es ˈel/ BrE AmE noun [uncountable]
(English as a Second Language) the teaching of English to people who are living in an English-speaking country but whose first language is not English
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012