wrinkle up meaning

[American slang]
[for something] to draw up in wrinkles; [for something] to become wrinkled.
  His nose wrinkled up as he smelled the burning pie.
  The cloth wrinkled up in the intense heat.

• wrinkle sth up:    [American slang]to ...
• wrinkle:    Noun: wrinkle  ...
• wrinkle finish:    [Electronics]A pat ...

Examples

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1. miss chadwick wrinkled up her forehead and looked rather like a perplexed boxer dog.
2. i wrinkled up my nose at the nasty smell
3. if you don't eat that, you'i l wrinkle up real fast
4. his little brother wrinkled up his nose at a nasty smell
5. he wrinkled up his forehead in perplexity