What does "immure" mean?

Immure: To inclose whithin walls, or as within walls; hence, to shut up; to imprison; to incarcerate. Those tender babes Whom envy hath immured within your walls. Shak. This huge convex of fire, Outrageous to devour, immures us round. Milton.

Additional senses

  1. 2.A wall; an inclosure. [Obs.] Shak.

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