noun: hybrid offspring of a male donkey and a female horse; usually sterile
noun: a slipper that has no fitting around the heel
Length: 4 letters
Scrabble value: 6
Words with Friends value: 6
Literati value: 4
TWL (USA): Found
SOWPODS (UK): Found
mule
elm
emu
lem
leu
el
em
eu
le
lm
lu
me
ml
mu
e
l
m
u
mukden
mulatto
mulberry
mulch
mulct
muleteer
muliebrity
mulish
mulishly
mulishness