wink
眨 centers on a quick, brief closing and opening of the eye: a wink.
眨 combines 目 (eye) with 乏, which likely contributes the sound and suggests a fleeting or diminished action, fitting the brief motion of a wink.
The eye 目 on the left and the fleeting 乏 on the right: imagine an eye that briefly runs out of sight, like a quick wink.
For ソウ, picture a soulful wink: soul -> ソウ, and the eye gives a quick, soulful wink.