to cause a wrinkle or indentation on a surface
to fold or form a line or ridge in something, typically paper or fabric, by pressing or bending it sharply
the runner on third base starts home as the pitcher delivers the ball
become wrinkled or crumpled or creased
scrape gently
a Malayan dagger with a wavy blade
a slight depression or fold in the smoothness of a surface
an angular or rounded shape made by folding