This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
The exact historical development of 剅 is uncertain. It visually combines 豆 and 刂, but the original semantic and phonetic roles of these components are unclear.
Since the meaning is unclear, focus on the shape: a bean 豆 next to a knife 刂. Imagine a knife slicing a bean, but the result is a mystery.
For ロウ, picture a row of beans being cut by the knife: row -> ロウ, as the knife slices through the row.