hood, flattering, enclosed in something that goes round and round
匼 centers on enclosure and circular motion: a hood that wraps around, something that goes round and round, or flattery that encircles a person with insincere words.
匼 is a rare character whose historical development is uncertain. It visually combines the enclosure 匚 with 合, but the exact origin of this combination is unclear.
The outer 匚 is a box or enclosure, and inside is 合 (fit, join). Imagine a hood that fits snugly around the head, enclosing it completely, or flattering words that wrap around someone in circles.
For アン, picture an ant (アン) crawling around inside a hood, going round and round: ant -> アン, and the ant is enclosed in the hood.