hoar

名词 hoar:

1. ice crystals forming a white deposit (especially on objects outside)
   同义词：frost, hoarfrost, rime

形容词 hoar:

1. showing characteristics of age, especially having grey or white hair
   同义词：grey, gray, grey-haired, gray-haired, grey-headed, gray-headed, grizzly, hoary, white-haired

1. The old man has hoar hair.
   那位老人头发花白。
2. He told us a hoar old joke that we'd all heard many times before.
   他给我们讲了一个我们都听了很多次的老掉牙的笑话。