noun
one's whole soul; all one's heart and soul
Used almost exclusively in the phrase 全霊を傾けて (ぜんれいをかたむけて) meaning 'with all one's heart and soul' or 'devoting one's entire being'. Rarely appears outside this construction.
彼は全霊を傾けてその研究に打ち込んだ。
He devoted his whole soul to that research.