German Low German [Term?]. Eventually onomatopoetic. IPA(key): /ˈbɔlɐn/ <span class="searchmatch">bollern</span> (weak, third-person singular present bollert, past tense bollerte, past...
From Böller. IPA(key): /ˈbœlɐn/ <span class="searchmatch">böllern</span> (weak, third-person singular present böllert, past tense böllerte, past participle geböllert, auxiliary haben)...
bollrest second-person singular subjunctive I of <span class="searchmatch">bollern</span>...
bollerest second-person singular subjunctive I of <span class="searchmatch">bollern</span>...
bollertet inflection of <span class="searchmatch">bollern</span>: second-person plural preterite second-person plural subjunctive II...