from “The Uxbridge Guide To Middle Earth”

 
Aulë. Like an owl.

Balrog. He’s having a ball. He’s a bit of a rogue.

Bree. Where the cheese comes from.

Dwarf (plural: dwarfves). In popular usage, when we say something “dwarfs” something else we mean it makes the something else seem small. This is because dwarfs are really, really big.

Ent. A tree with ears, nose and a throat.

Gil-galad. An elf born in the First Age. Known as ‘Old Gil’.

Lothlórien. This is French; it means ‘never Lothló’.

Manwë. Masculine urine.

Morgoth. Likes Sisters of Mercy to a greater degree than you.

Númenor. Or what? No really. What’s the alternative?

Saruman. The man with the Saru. If you ask me to defnine Saru, I can only tell you that it's a very difficult word, very difficult indeed. Truly, Saru seems to be the hardest word.

Silmarillion. A famous prog-rock band took their name from this. You remember: The Sils.

Tom Bombadil. Hey dol! merry dol! ring a dong ditty!
Ring a dong! hop along! flatten the city!
Tom Bomb, jolly Tom, Atom Bombadillo!

Old ’tom Bombadil over-water bringing
Enola Gay is bearing him and OMD are singing
Hey! Come merry dol! derry dol! and dream-o,
Brighter than a thousand suns above old Hiroshim-o!
Poor old mortal-man, tuck your roots away now!
Bomb's in a hurry now. Night must follow day now!