Абордаж (abordazh) literally means 'boarding' a ship, often in a military or pirate context. It's a dramatic and somewhat archaic term that evokes images of intense, close-quarters combat.
In this song, the artist uses it metaphorically to describe the overwhelming and inescapable way his beloved is 'attacking' his emotions. He sings, "Та ти наступаєш ти на абордаж" (But you are advancing, you are boarding), suggesting he feels completely taken over by her presence and influence, unable to escape her powerful hold.
Okean Elzy's "Вище Неба (Vyshche Neba)" is a really intense song about a love that feels both exhilarating and dangerous. The singer is completely consumed, saying, "Ну ось я вже більше нічого не бачу, Нічого не чую, І я вже не я" [Well, I see nothing else, I hear nothing, And I am no longer myself]. It's like his whole world shrinks down to this one person. He's desperate for them to stay, pleading, "Хей хоч сьогодні не йди" [Hey, at least don't leave today].
He describes a feeling of falling "Вище неба, Вище неба" [Higher than the sky, Higher than the sky], which sounds amazing but also a bit out of control, especially when he adds, "І я відчуваю як падаю в небо, Як падаю в небо і краю нема" [And I feel myself falling into the sky, Falling into the sky and there's no end]. This love is so powerful it's almost scary. He calls her eyes both his "небезпека" [danger] and his "щастя моє" [happiness], showing that push and pull of intense emotion. He feels trapped, saying, "Мені би тікати але ж ти не даш" [I would run, but you won't let me]. It's a passionate, almost overwhelming love story, where he's flying high but also completely at her mercy.