tall walnut-trees that shades one side of the valley
imagery
to dream dreams, and see apparitions
repetition
fluttered
onomatopoeia
see strange sights
alliteration
"Spare the rod and spoil the child."
allusion
"double the schoolmaster up, and lay him on a shelf of his own schoolhouse;"
dialect
whole neighborhood abounds
assonance
for he was a huge feeder, and, though lank, had the dilating powers of an anaconda
metaphor
the blue jay, that noisy coxcomb
personification
spectre
colloquialism
esteemed by the women as a man of great erudition, for he had read several books quite through
parody/satire
Ichabod prided himself upon his dancing as much as upon his vocal powers.
irony
like a midnight blast
simile
his school was dismissed
consonance
one of the quietest places in the whole world
hyperbole