palm-tree
梖 centers on the palm tree, a type of tree with a distinctive shape and tropical association.
梖 combines 木 (tree) with 貝 (shell), likely as a phono-semantic compound where 貝 contributes the sound and 木 indicates a type of tree. The exact historical development is uncertain.
A tree 木 with shell-like 貝 fronds or fruit: imagine a palm tree whose leaves spread out like a shell.
For ハイ, picture a palm tree waving 'hi' in the breeze: hi -> ハイ, as the palm fronds sway back and forth.
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