Probably from 'anah (in the sense of conveyance); -a ship or (collectively)a fleet -- galley, navy (of ships).
see HEBREW 'anah
H590. oni
אֳנִי noun masculine1 Kings 10:11 & feminine10:22
collective Ships, fleet — absolute 1 Kings 9:26 +; construct 10:11 +; — of Solomon 9:26-27, called ׳א תַרְשִׁישׁ (i.e. large, sea-going vessels, such as sail to Tarshish) 10:22 (twice in verse); ׳א חִירָם 10:11, 22; propelled by oars שַֿׁיִט׳א Isaiah 33:21.