1 old /ˈoʊld/ adjective
older; oldest
1 old
older; oldest
Learner's definition of OLD
: having lived for many years : not young
used to talk about or ask about a person's age
: having a specified age
: having existed or been in use for a long time : not new
: having existed for a specified amount of time
always used before a noun
: belonging to, used by, or known by someone in the past
used to say that someone or something has been your friend, enemy, etc., for a long time
always used before a noun : done or experienced many times
informal used for emphasis after adjectives like big, good, etc.

any old

used to describe someone or something that is not special or specific

chip off the old block

see 1chip

for old times' sake

see 1sake

old boy/chap/man/etc.

British, old-fashioned
used to address a man see also old boy
see also good old boy
old, ancient, antique, and archaic describe things that existed or were used in the past.
old is the most common and general of these words and can refer to either the recent past or to the distant past.
ancient refers to things that happened or existed in the very distant past and that may or may not exist today.
antique refers to things, such as toys, machines, and pieces of furniture, that have been kept from the past and that are often valuable.
archaic refers to things, such as words or ways of behaving, that belong to a much earlier time and that are no longer used.
2 old /ˈoʊld/ noun
plural olds
2 old
plural olds
Learner's definition of OLD
[count] : a person who has a specified age used in combination
old [plural] : old people often used with the

of old

formal + literary
: in the past : in a time that was long ago