fishing net
罱 centers on a tool for catching fish: a fishing net. The meaning is specific and concrete, without broad abstract extensions.
罱 combines 罒 (net) with 南, which likely contributes the sound. The character is a phono-semantic compound for a type of fishing net.
The top 罒 is a net, and the bottom 南 suggests the south, where fishermen might cast their nets. Picture a net spread out under the southern sun to catch fish.
For ダン, imagine a fisherman named Dan casting his net: Dan -> ダン, and he always brings in a full net.