"slice of watermelon" is a correct and usable phrase in written English.
It can be used to refer to a portion of a watermelon. For example, "I had a juicy slice of watermelon for a snack".
Garnish with a thin slice of watermelon and guzzle.
Even if you haven't got your trunks they'll give a wave and a slice of watermelon.
He holds the roasted infant up to his teeth like a slice of watermelon.
One 4-year-old's beloved slice of watermelon tastes like soap to his 7-year-old sister.
Before the boat even left the dock the food disappeared, right down to the last slice of watermelon — a Chinese favorite.
It comes with boiled corn reminiscent of the Coney Island boardwalk, and a whopping big slice of watermelon that tastes, in contrast, as if fashioned by magic.
2. To serve, arrange three overlapping slices of watermelon on each of four serving plates.
Heirloom tomatoes, at their seasonal peak, were nicely offset by aged feta cheese and thin slices of watermelon.
Moving in and out of the houses Mr. Joseph and Ms. Tolmaire may be singing or sharing slices of watermelon.
Helen and OJ, both drama graduates in their 20s, have just demolished a carcass and are now feeding each other slices of watermelon.
Over bottled water and slices of watermelon at Todomundo, the SoHo office coordinating Mr. Byrne's visual-arts and musical projects, Mr. Eno and Mr. Byrne chatted jovially about the latest intersection of their two prolific careers.
