Meaning of V-FORMATION in English

V-FORMATION

V-for ‧ ma ‧ tion /ˈviː fɔːˌmeɪʃ ə n $ -fɔːr-/ BrE AmE noun [countable]

if birds or planes fly in a V-formation, they form the shape of the letter V as they fly

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