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Bifold

adj, noun

Adjective

1
Twofold, double. not-comparable
2
Of two kinds. not-comparable
"O madneſſe of diſcourſe, / That cauſe ſets vp with and againſt it ſelfe, / By-fould authority : where reaſon can reuolte / Without perdition, and loſſe aſſume all reaſon, / Without reuolt."

Noun

1
A door, window, shutter, or divider consisting of two equal panels hinged together so that it opens by folding the panels against each other.
"Wood-finished insulative shutters set as bifolds at the window."
2
A sheet of paper or cardboard folded in half along a crease down the center.
"AFSl is made up of thirteen bifolds, or fifty-two pages (each unfolded folio measuring 13.5 x 21 inches), beginning with the title page and continuing for fifty-one numbered pages."
3
A wallet, billfold, or carrying case with a single fold, so that it opens like a book.
"A 1996 survey showed that men under age 20 buy three times as many trifolds as bifolds. So a trifold wallet becomes a habit, even after it has expanded to the size and shape of a jumbo bar of soap."
4
A crease or turn that causes something to double back on itself.
"I want to learn how to play, and that's all puzzles and problems, and what do I care when I go to play a game about parallels and bifolds?"

Etymology 1

From bi- + -fold.

Etymology 2

From bi- + -fold.

Unscramble this word: bifold