a spatula for spreading paint or ink
"The artist used a plastic slice to spread the acrylic evenly across the canvas before it dried."
That which is thin and broad.
"The baker sliced a thick, broad piece of bread from the loaf."
In plain English: A slice is a thin, flat piece cut from something larger.
"She took a large slice of cake from the birthday tray."
hit a ball and put a spin on it so that it travels in a different direction
"The pitcher sliced the fastball inside, surprising the batter who swung at nothing."
hit a ball so that it causes a backspin
"The golfer sliced the ball to create a sharp backspin that stopped it dead on the green."
To cut into slices.
"She used a serrated knife to slice the watermelon into perfect wedges."
Having the properties of a slice knot.
"The complex topology of the manifold was proven to be equivalent to that of a slice knot."
In plain English: Slice describes something that is very thin, flat, and easy to cut through.
"The sliced bread fell apart in my hand."
A surname.
"The local bakery is owned by Mr. Slice, whose family has run it for three generations."
The word slice comes from the Middle English sclise and traces back to a Frankish root meaning "to split." It entered English with its current sense of cutting something into thin pieces, derived originally from an Old French term for a piece that had been split off.