a hairstyle that consists of sections of hair knotted together. some people intentionally "dread" their hair by backcombing or other methods while others allow their locks to form naturally. contrary to popular belief, you can and should wash them, and in fact most people do.
also referred to as simply "dread"
beavertail: when someone has a large massive dread, possibly all their hair in one dreadlock.
dreadhead: someone with dreads
"dude check out that guys fat dreads"
"did you see his heady dreads?"