cockle

Noun

• common edible, burrowing European bivalve mollusk that has a strong, rounded shell with radiating ribs

• common edible European bivalve

Verb

• to gather something into small wrinkles or folds
  • She puckered her lips
    

• stir up (water) so as to form ripples

Related words

• Synonyms: 
  pucker , rumple , crumple , knit , ripple , ruffle , riffle , undulate