half-pay adjective 1half pay noun 1 adjective1 •Receiving reduced pay, as a naval or military officer does when not in active service.One of the half-pay men brought me a nasty wavy dagger that had been picked up in the road. 'One of your Indian curiosities, I suppose, Dr Tulloch?' he remarked. — 1923 half pay noun1 •Reduced pay, as of naval or military officers when not in active service.