WordNet sense 1 (powerful brownish-yellow bear of the uplands of western North America):

silvertip, silver-tip, grizzly bear, Ursus arctos horribilis, Ursus horribilis

WordNet sense 2 (showing characteristics of age, especially having grey or white hair):

gray, grey, hoary, gray-haired, gray-headed, grey-haired, grey-headed, hoar, white-haired

WordNet sense 3 ((used especially of persons) having lived for a relatively long time or attained a specific age):

old