drill for sowing grain
耬 centers on a specialized agricultural tool: a drill used for sowing grain. Its meaning is narrow and technical, without broader abstract extensions.
耬 combines 耒 (a farming tool, specifically a plow) with 婁, which likely contributes the sound. The character refers to a grain drill, a specialized agricultural implement.
The left side 耒 represents a farming tool. The right side 婁 looks like a complex mechanism. Together, picture a hand-operated grain drill with many parts, used for precise sowing.
For ロウ, imagine a row of seeds being drilled into the soil: row -> ロウ, and the grain drill makes neat rows.
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