Pronunciation: (ōld),[key] —adj.,old•er, old•est or eld•er, eld•est, —n.
—adj. 1. far advanced in the years of one's or its life: an old man; an old horse; an old tree. 2. of or pertaining to the latter part of the life or term of existence of a person or thing: old age. 3. as if or appearing to be far advanced in years: Worry had made him old. 4. having lived or existed for a specified time: a man 30 years old; a century-old organization. 5. having lived or existed as specified with relation to younger or newer persons or things: Jim is our oldest boy. 6. having been aged for a specified time: This whiskey is eight years old. 7. having been aged for a comparatively long time: old brandy. 8. long known or in use: the same old excuse. 9. overfamiliar to the point of tedium: That joke gets old fast. 10. belonging to the past: the good old days. 11. having been in existence since the distant past: a fine old family. 12. no longer in general use: This typewriter is an old model. 13. acquired, made, or in use by one prior to the acquisition, making, or use of something more recent: When the new house was built, we sold the old one. 14. of, pertaining to, or originating at an earlier period or date: old maps. 15. prehistoric; ancient: There may have been an old land bridge between Asia and Alaska. 16. (cap.) (of a language) in its oldest known period, as attested by the earliest written records: Old Czech. 17. experienced: He's an old hand at welding. 18. of long standing; having been such for a comparatively long time: an old and trusted employee. 19. (of colors) dull, faded, or subdued: old rose. 20. deteriorated through age or long use; worn, decayed, or dilapidated: old clothes. 21. Physical Geog.(of landforms) far advanced in reduction by erosion or the like.
22. sedate, sensible, mature, or wise: That child seems old beyond his years. 23. (used to indicate affection, familiarity, disparagement, or a personalization): good old Bob; that dirty old jalopy. 24. Informal.(used as an intensive) great; uncommon: a high old time. 25. former; having been so formerly: a dinner for his old students.
—n. 1. (used with a pl. v.) old persons collectively (usually prec. by the): appropriations to care for the old. 2. a person or animal of a specified age or age group (used in combination): a class for six-year-olds; a horse race for three-year-olds. 3. old or former time, often time long past: days of old.