This is the 3860th most frequent Russian word.
антонов
"Антонов" is a Russian surname, often used as a proper noun, and does not have a specific standalone definition in English.
The word 'антонов' here is used as a surname, referring to an individual known for his contributions to aviation.
Антонов — это фамилия известного конструктора самолётов.
Antonov is the surname of a famous aircraft designer.
In this sentence, 'антонов' refers to airplanes designed and manufactured by the Antonov design bureau.
Я видел самолёты Антонова на выставке воздушной техники.
I saw Antonov's airplanes at the air technology exhibition.
Here 'антонов' is utilized as the name of the company, which implies the organization responsible for aircraft engineering and production.