lettuce
萵 refers specifically to lettuce, a leafy plant used as food.
萵 is a phono-semantic compound: the grass radical 艹 indicates a plant, and 咼 (カ) provides the sound ワ. The character was created to represent lettuce.
The grass radical 艹 sits above 咼, like a leafy lettuce plant growing out of a tangled root ball.
For ワ, imagine a rabbit saying 'wa!' as it happily munches on a big leaf of lettuce: wa -> ワ.
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