enclose, surround, encircle, preserve, store, keep
圍 centers on forming a boundary around something: enclosing, surrounding, or encircling. The ideas of preserving, storing, and keeping follow naturally from holding something within a protected space.
圍 combines 囗 (enclosure) with 韋, which likely contributes the sound and may relate to the idea of surrounding or wrapping. The exact historical development of 韋 within this character is uncertain.
The outer 囗 is a solid boundary, and inside it 韋 looks like a wrapped bundle being kept safe. Picture a fence surrounding a stored treasure: 圍 means to enclose and preserve.
For イ, imagine an eagle (イーグル) circling and enclosing its prey: eagle -> イ, and the bird's flight surrounds the target.