Noun
A long-standing friend
A friend who is old / aged
Source: en.wiktionary.orgEvery murderer is probably somebody's old friend. Agatha Christie
292. The best mirrour is an old friend. George Herbert
The Fifth Amendment is an old friend and a good friend, one of the great landmarks in men's struggle to be free of tyranny, to be decent and civilized. William O. Douglas
An old friend is better than two new ones. Russian Proverb
An old friend is like a saddled horse. Afghan Proverb
There is no better mirror than the face of an old friend. Cuban Proverb