sequester (Verb) — Keep away from others. ex. "He sequestered himself in his study to write a book"
sequester (Verb) — Set apart from others. ex. "The dentist sequesters the tooth he is working on"
sequester (Verb) — Requisition forcibly, as of enemy property. ex. "the estate was sequestered"
sequester (Verb) — Take temporary possession of as a security, by legal authority. ex. "The customs agents sequestered the illegal shipment"
sequester (Verb) — (chemistry) undergo sequestration by forming a stable compound with an ion. ex. "The cations were sequestered"