Definition of old :
1. Aged; antiquated; hence, wanting in the mental vigor or other qualities belonging to youth; - used disparagingly as a term of reproach.
2. Continued in life; advanced in the course of existence; having ( a certain) length of existence; - designating the age of a person or thing; as, an infant a few hours old; a cathedral centuries old.
3. Formerly existing; ancient; not modern; preceding; original; as, an old law; an old custom; an old promise.
4. Long cultivated; as, an old farm; old land, as opposed to new land, that is, to land lately cleared.
5. Long practiced; hence, skilled; experienced; cunning; as, an old offender; old in vice.
6. More than enough; abundant.
7. Not new or fresh; not recently made or produced; having existed for a long time; as, old wine; an old friendship.
8. Not young; advanced far in years or life; having lived till toward the end of the ordinary term of living; as, an old man; an old age; an old horse; an old tree.
9. Old- fashioned; wonted; customary; as of old; as, the good old times; hence, colloquially, gay; jolly.
10. Open country.
11. Used colloquially as a term of cordiality and familiarity.
12. Worn out; weakened or exhausted by use; past usefulness; as, old shoes; old clothes.
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aged (part of speech: adjective)
past (part of speech: adjective)
old (part of speech: adjective)