streamer adorned with feathers
翿 centers on a ceremonial banner or streamer decorated with feathers, used in ritual or display contexts.
翿 combines 羽 (feathers) with 壽, which likely contributes the sound and may relate to a long or ceremonial object, together suggesting a feathered streamer used in rituals.
The right side 羽 shows feathers, and the left side 壽 suggests something long-lasting or ceremonial. Picture a long ceremonial banner adorned with feathers, waving in a ritual.
For トウ, imagine a feathered streamer tied to the toe of a giant statue during a parade: toe -> トウ, and the feathers flutter from the toe.