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to draw in; to take in; to retract
to withdraw; to take back (e.g. words)
怒られて、言い訳を引っ込めた。
I backed down from my excuse after being scolded.
冬になると、カメは頭を引っ込めて眠る。
In winter, turtles sleep with their heads drawn in.
すでに提案した計画を今さら引っ込めることはできない。
I can't retract a proposal that has already been submitted.