Longman Dictionary of Contemporary English - meditation

~ n 1 the practice of emptying your mind of thoughts and feelings, in order to relax completely or for religious reasons  (Try to set aside an hour each day for meditation.) 2 C usually plural, the act of thinking deeply and seriously about something  (He stood gazing into the water, lost in meditation. | Rob interrupted his father's meditations.) 3 C usually plural serious thoughts about a particular subject + on  (meditations on death and loss)