name of Chinese river
濮 is a rare kanji used primarily as the name of a Chinese river. Its standalone meaning is tied to that specific place name.
濮 combines the water radical 氵 with 僕, which likely provides the sound. The character was created to name a specific river.
The water radical 氵 beside 僕 suggests a river associated with the sound 僕. Think of it as the 'Boku River' in China.
For ボク, use the right-side component 僕 (ボク) itself as the sound cue: the river's name sounds just like 僕.
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