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to move with a rapid up-and-down motion
(of a bird) to rhythmically move its wings in an upward and downward motion, either during flight or in preparation for taking flight
to express agitation, make a fuss, or become overly concerned or worked up about something
to move an object or a part of it up and down or to and fro in a rapid or rhythmic manner
any broad thin and limber covering attached at one edge; hangs loose or projects freely
a movable airfoil that is part of an aircraft wing; used to increase lift or drag
a movable piece of tissue partly connected to the body
the motion made by flapping up and down
much public anger or discussion
a portion of a book cover that extends beyond the edges of the pages and folds over to protect the page edges
What is a "flap"?
A flap is a portion of the cover or dust jacket that extends beyond the edges of the book's pages. It is typically used to hold additional information, such as a synopsis, author biography, or promotional details. Flaps can also help protect the book's cover by folding over and tucking into the book, securing it in place. This feature is common on hardcover books and dust jackets, adding both functional and decorative elements to the book's design.
