Nouns

(n)old man, greybeard, graybeard, Methuselaha man who is very old
(n)old boy, old mana familiar term of address for a man
(n)old manan informal term for your father
(n)common wormwood, absinthe, old man, lad's love, Artemisia absinthiumaromatic herb of temperate Eurasia and North Africa having a bitter taste used in making the liqueur absinthe
(n)old man(slang) boss