grizzle

Short definition from Wiktionary

Noun

1. 1
   A dark grey colour.
2. 2
   Grey hair.
3. 3
   A grey wig.

Adjective

1. 1
   Of a grey colour.

Verb

1. 1
   To make or become grey, as with age.
2. 2
   To cry continuously but not very loudly (said especially of young children).
3. 3
   To whinge or whine.
4. 4
   To fuss or cry.

Proper noun

1. 1
   A surname.