To change one’s affiliations, role, etc: changed hats and supported Maggie Thatcher (1990s+)
a reversal of one’s feelings, intentions, opinions, etc.: At first Mother said we couldn’t go, but she had a change of heart and let us. Altered feelings or attitude, as in Paul didn’t like his new job, but a raise prompted a change of heart and he became quite enthusiastic. [ Early 1800s ]
a key opening only one lock.
menopause. noun a nontechnical name for menopause change of life n. Menopause. Also, the change. Menopause. For example, After nine pregnancies, she was actually looking forward to the change of life, or She became quite moody during the change. [ c. 1820 ]
a person or thing that changes bills or coins for ones of smaller denominations. a device for supplying coins of specific denominations when a key is moved.