v. Obs. [UN-2 9 + RIVE v.1] trans. To tear apart; to open up.
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.
1652. Benlowes, Theoph., VI. xciv. Thus, they Into each others knowledge dive; And, by consent, thoughts, else inscrutable, unrive.