betel palm tree
榔 refers specifically to the betel palm tree, a type of palm known for its nuts.
榔 combines 木 (tree) with 郎, which likely contributes the sound ロウ. The character was created to name the betel palm tree.
The tree radical 木 beside 郎 suggests a specific tree: the betel palm. Picture a gentleman (郎) leaning against a palm tree (木) chewing betel nut.
For ロウ, imagine a row of betel palm trees: row -> ロウ, and each tree in the row is a 榔.
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