Grown old in service.Hence— Practised and skilful.Entitled to consideration and allowance on account of long service.In milit. matters, practised and accustomed to war, as distinguished from raw, newly enlisted, etc.Long-continued; of, pertaining to, or characteristic of a veteran or veterans.n. One long practised, and therefore skilled and trustworthy, or entitled to consideration on account of past services; especially (military), a veteran soldier. See I., 2 .Same as veteranize.