clouds
靉 centers on clouds, specifically a dense, dark, or overcast sky. The single given meaning is straightforward, but the character is rare and its usage is limited to this atmospheric sense.
靉 combines 雲 (cloud) with 愛, which likely contributes the sound アイ. The character is a phono-semantic compound where 雲 provides the meaning and 愛 the reading.
The left side is 雲 (cloud), and the right side is 愛 (love). Imagine a sky so full of love that it forms thick, dark clouds—靉 is those dense clouds.
For アイ, picture an eye (アイ) in the sky peering through the dark clouds: eye -> アイ, and the clouds are so thick you can barely see it.
—
trailing (clouds); thick; heavy