old man n 1: a man who is very old [syn: {greybeard}, {graybeard}, {Methuselah}] 2: a familiar term of address for a man [syn: {old boy}] 3: an informal term for your father 4: aromatic herb of temperate Eurasia and North Africa having a bitter taste used in making the liqueur absinthe [syn: {common wormwood}, {absinthe}, {lad's love}, {Artemisia absinthium}] 5: boss