This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
The exact historical development of 犾 is uncertain. It visually combines 犭 (dog/beast radical) with 犬 (dog), but the original purpose and meaning are unclear.
The kanji shows a dog radical 犭 beside a full dog 犬. Picture two dogs side by side, but since the meaning is unclear, remember it as a rare kanji with an uncertain meaning.
For ギン, imagine two dogs (犭 and 犬) guarding a silver (銀, ぎん) bone: 銀 -> ギン, and the dogs are the kanji's shape.