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babysitting; babysitter
protecting; keeping; keeper
「守」 has another reading with different meanings.
director (of the provincial governors under the ritsuryō system)
子供こどもの守りまもりを頼またのまれた。
I was asked to babysit.
週末しゅうまつに守りまもりの仕事しごとがある。
I have a babysitting job this weekend.