冲浪潜水员

Well, you most likely knew what a rooster is. But, do you know the word "roost"? I must admit that I didn't know it until I looked up Wiktionary.org, which has these for one etymology of this word:

Noun

roost (plural roosts)

1. 1. The place where a bird sleeps (usually its nest or a branch). 
2. 2. A group of birds roosting together.

Verb

1. 1. ( of birds) sleep.
2. 2. to come back home
    

There are another two etymologies of roost documented in Wiktionary.org, but I won't bug you with those :)

S.D
2015.1.14