v. Obs. [UN-2 9 + RIVE v.1] trans. To tear apart; to open up.

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1592.  Wyrley, Armorie, Capitall de Buz, 109. Such one as … troubles makes him faster for to twind Fast gaged band of loue, and scorns to liue More rather then the same he will vnriue.

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1652.  Benlowes, Theoph., VI. xciv. Thus, they … Into each others knowledge dive; And, by consent, thoughts, else inscrutable, unrive.

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