UNIX Systems Administrator (n. -amer 'You-knicks SYS'tems 'AD-min-is-trat-or') - 
One who maintains, coddles, torments, curses, and heals computers running the UNIX operating system, and the users who use them.
1) one of a group of often portly and bearded people with a penchant for Monty Python, Bablyon 5 and Dilbert. 2) a member of the brotherhood of pseudo-shamans, techno-medicine men and auto-mechanics of the abstract and unseeable. More like holy men than preachers, and about as comprehendable to an outsider. 3) 'Air Traffic Controllers' of the internet. 4) someone who gets more email than you. 5) the knower of the password of passwords.

Plural: "A retribution of - ", "A geshtalt of -", "An indecision of -". Managing a group of sysadmins can be likend to pushing a herd of kittens uphill... with a rope.