ruck

Noun

• an irregular fold in an otherwise even surface (as in cloth)

• a crowd especially of ordinary or undistinguished persons or things
  • his brilliance raised him above the ruck
    
  • the children resembled a fairy herd
    

Verb

• become wrinkled or drawn together
  • her lips puckered
    

Related words

• Synonyms: 
  pucker , herd , ruck up