From Longman Dictionary of Contemporary Englishpour something ↔ out phrasal verbTELLif you pour out your thoughts, feelings etc, you tell someone all about them, especially because you feel very unhappy She poured out all her troubles to him.pour out your heart/soul (=tell someone all your feelings, including your most secret ones) → pour→ See Verb table
Examples from the Corpus
pour out• The banana mustn't look brown and the fondue mustn't splash when it's poured.• When they reached the Oak Motel, Cyril opened the door and poured himself out.• He couldna poured water out a boot if the instructions was on the heel.• Evelyn poured everyone out a generous measure.• She got up from the table and poured herself out a glass of water, and then sat down again.• Miss Grantly poured lukewarm tea out of a silver teapot and then lolled back gracefully in her chair.• The reek poured unabated out of the operating room.• He poured it out upon the little sons and daughters, and servants and handmaidens..pour out your heart/soul• Andrus had gone to Zoser and poured out his heart.• We may pour out our hearts about the situation in which we find ourselves, expressing our trust, hope and confidence.• Suddenly, Jason burst into tears and poured out his heart, telling his mother all about everything.• I had no idea Kay was so unhappy until she poured out her soul to me last night.• He poured out his heart to me.• She would regularly pour out her heart to the kind-hearted friend who she has known since her teenage days. 