Definition of かいろ
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(n) circuit (electric)
保護回路を飛ばしてしまおう。
Let's bypass the protection circuit.
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(n) pocket heater; hand warmer; heater pack
彼はカイロで体を暖めた。
He warmed himself with a pocket heater.
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(n-t) sea route
陸路を運ぶのは大変ですが、海路で運ぶのは簡単です。
It's very difficult to transport them overland, but simple to do so by sea.
- (n) first lighting of the hearth in a Zen temple (first day of the 10th or 11th month)