The noun old has 1 sense (no senses from tagged texts)
1. old -- (past times (especially in the phrase `in days of old'))
Overview of adj old
The adj old has 8 senses (first 6 from tagged texts)
1. (515) old -- ((used especially of persons) having lived for a relatively long time or attained a specific age; "an old man's eagle mind"--William Butler Yeats; "his mother is very old"; "a ripe old age"; "how old are you?")
2. (435) old -- (of long duration; not new; "old tradition"; "old house"; "old wine"; "old country"; "old friendships"; "old money")
3. (101) old -- ((used for emphasis) very familiar; "good old boy"; "same old story")
4. (7) previous, old -- (just preceding something else in time or order; "the previous owner"; "my old house was larger")
5. (3) Old -- (of a very early stage in development; "Old English is also called Anglo Saxon"; "Old High German is High German from the middle of the 9th to the end of the 11th century")
6. (2) old, older -- (old in experience; "an old offender"; "the older soldiers")
7. erstwhile, former, old, onetime, quondam, sometime -- (belonging to some prior time; "erstwhile friend"; "our former glory"; "the once capital of the state"; "her quondam lover")
8. honest-to-god, honest-to-goodness, old, sure-enough -- ((used informally especially for emphasis); "a real honest-to-god live cowboy"; "had us a high old time"; "went upriver to look at a sure-enough fish wheel")