A fold or wrinkle.
A state of perplexity or anxiety; confusion; bother; agitation.
To pinch or wrinkle; to squeeze inwardly, to dimple or fold.
A small furrow, ridge or crease in an otherwise smooth surface.
A twist on something existing; a novel difference.
A fault, imperfection or bug especially in a new system or product; typically, they will need to be ironed out.
A winkle
A line or crease in the skin, especially when caused by age or fatigue.
To develop irreversibly wrinkles; to age.
To make wrinkles in; to cause to have wrinkles.
To pucker or become uneven or irregular.