A very narrow slot or cut in something is a slit. You might fill your pita bread with falafel by first making a slit in its side.

A long strip of sunlight might shine through a slit in your curtains and wake you up in the morning. Or you may narrow your eyes to slits in anger when you see the mess your sister made in your room. You can also use this word as a verb, to mean "cut into," like when you slit a croissant and insert jam, or slit an envelope with an old-fashioned letter opener.

Definitions of slit

n a long narrow opening

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a slit in a garment that exposes material of a different color underneath; used in Renaissance clothing
a small slit (as for inserting a coin or depositing mail)
a slit in a garment (as in the back seam of a jacket)
coin slot
a slot through which coins can be inserted into a slot machine
mail slot
a slot (usually in a door) through which mail can be delivered
Type of:
a vacant or unobstructed space that is man-made

n a narrow fissure

Type of:
cleft, crack, crevice, fissure, scissure
a long narrow opening

n a depression scratched or carved into a surface

dent, incision, prick, scratch
score, scotch
a slight surface cut (especially a notch that is made to keep a tally)
Type of:
depression, impression, imprint
a concavity in a surface produced by pressing

n obscene terms for female genitals

Type of:
fanny, female genital organ, female genitalia, female genitals
external female sex organs

v make a clean cut through

slit her throat”
Type of:
separate with or as if with an instrument

v cut a slit into

slit the throat of the victim”
Type of:
make an incision into by carving or cutting

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