v. Obs. rare. Also 7 boaken. [f. BOLK v. + -EN: cf. light, lighten.]
1. intr. To gush, flow in gulps. = BOLK 7
a. 1300. E. E. Psalter cxliii[iv]. 13. Cleves Bolkenand fra þat in to yit [? þis; v.r. from þis in þat; Vulg. eructantia ex hoc in illud].
2. To throb. = BOLK 6.
1697. Phil. Trans., XIX. 379. The tops of my Fingers did boaken and ake, as when after extream cold, one has the hot-ach in them.