Megan Fontenot asks the question over on Twitter: What are some words you learned from reading Tolkien’s works?

That could be a large number. One easy way to find a bunch of them is to look in the list my pronouncing dictionary didn’t know. Throw out the proper names, the invented languages, and (as much as I wanted to leave them in) things like “tinbone” and “thinbone”. That gave me 37 words, which is plenty to start with:

belike
brock
bullroarer
cornel
corslet
deeping
darkling
dishevelled
draught
dwimmer
ent
etten
eyot
eyrie
fen
flet
footpads
habergeon
leechcraft
mark
mathom
surcoat
swart
hyrne
thrawn
trothplighted
garth
unlading
vambrace
weapontake
weregild
weskit
wang
whortle
withy
woses
writhen

Fun fact:  all but two of those words are currently underlined in red by the WordPress spell-checker.