Meaning of MSG in English

MSG /ˌem es ˈdʒiː/ BrE AmE noun

1 . [uncountable] (monosodium glutamate) a chemical that is added to food to make it taste better

2 . ( also msg ) [countable] (message) used especially in ↑ text message s sent or received on a ↑ mobile phone

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.