零
レイ, ぜろ, こぼ.す, こぼ.れる

zero, spill, overflow, nothing, cipher

JLPT2 G7 S13 F1217

As per 令# (long sequence) + 雨 rain/natural phenomena → prolonged rain/drizzle → *drops of water* (compare 露, 落 and 靈) → *tiny*; *little* → *zero*.

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