wrinkle

wrinkle Runzel

From Middle English wrinkle, wrynkel (“crease, fold, wrinkle”), from the verb (see below). Cognate with Dutch wrinkel (“wrinkle, crease”). Compare also Middle English runkel (“wrinkle”), from Old Norse hrukka (“wrinkle”), from Proto-Germanic *hrunkǭ (“wrinkle, crease”), whence also French fronce(“crooked smile, scowl, frown”), German Runzel (“wrinkle”).

wrinkle (plural wrinkles)

1. A small furrow, ridge or crease in an otherwise smooth surface.
2. A line or crease in the skin, especially when caused by age or fatigue.

   Spending time out in the sun may cause you to develop wrinkles sooner.

3. A fault, imperfection or bug especially in a new system or product; typically, they will need to be ironed out.

   Three months later, we're still discovering new wrinkles.

4. A twist on something existing; a novel difference.