1In later use chiefly reflexive. To shut up or confine (a thing or person); to close off, to obstruct access to.
2 rare To cut (a person) off from the world, society, etc.; to seclude from.
Late Middle English (in an earlier sense). From classical Latin reclūdere to open, to open up, throw open, (later also) to shut or store away, to shut off (2nd century a.d.), in post-classical Latin also (in passive, recludi) to withdraw from the world as a recluse from re- + claudere to close.