Custody

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late Middle English: from Latin custodia, from custos ‘guardian’.

wiktionary

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From Latin custodia(“a keeping, watch, guard, prison”), from custos(“a keeper, watchman, guard”).

etymonline

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custody (n.)

mid-15c., "a keeping, a guarding, safe-keeping, protection, defense," from Latin custodia "guarding, watching, keeping," also "prison," from custos (genitive custodis) "guardian, keeper, protector," from PIE root *(s)keu- "to cover, conceal." Meaning "restraint of liberty, confinement" is from 1580s.