Noun greybeard has 1 sense
  1. old man, greybeard, graybeard, Methuselah - a man who is very old
    --1 is a kind of oldster, old person, senior citizen, golden ager; man, adult male
    --1 has particulars:
     codger, old codger; old-timer, oldtimer, gaffer, old geezer, antique; patriarch
,
TOP