serv ‧ er /ˈsɜːvə $ ˈsɜːrvər/ BrE AmE noun [countable]
[ Word Family: noun : ↑ servant , ↑ serve , ↑ server , ↑ service , ↑ disservice , the services, ↑ serving , ↑ servery , ↑ servicing , ↑ servility , ↑ servitude ; adjective : ↑ serviceable , ↑ servile , ↑ serving ; verb : ↑ serve , ↑ service ]
1 .
a) the main computer on a network, which controls all the others:
The server’s down (=not working) again.
b) one of the computers on a network that provides a special service
file/print server
All data is stored on a central file server.
2 . the player who hits the ball to begin a game in tennis, ↑ volleyball etc
3 . a special spoon for putting a particular type of food onto a plate:
salad servers
4 . American English someone whose job is to bring you your food in a restaurant SYN waiter , waitress