Entry 1 sense Webster, 1913 Estuate · Es·tu·ate · IPA /ˈɛs.t͡ʃuˌeɪ̯t/ 01 v. i. To boil up; to swell and rage; to be agitated. imp. & p. p. Estuated; p. pr. & vb. n. Estuating 1. To boil up; to swell and rage; to be agitated.