Backache/ˈbækeɪk/ Definition 1 of 2Pro Tip 1/3Physical Condition Use 'backache' to describe actual physical pain in your back. After gardening all day, she felt a terrible backache. Pro Tip 2/3Medical Context 'Backache' is common in healthcare discussions or when talking about physical health. The doctor asked if he had a history of backache. Pro Tip 3/3Severity Adjective Combine 'backache' with adjectives like 'mild' or 'intense' to describe the pain level. She couldn't attend the meeting due to a mild backache.