Answer: clam

AnswerCrossword Clue
CLAMCasino delicacy?
CLAMLittleneck, e.g.
CLAMBuck
CLAMEpitome of happiness
CLAMSymbol of happiness
CLAMChowder item
CLAMHappy edible?
CLAMShut (up)
CLAMChowder bit
CLAMHardly a big talker
CLAMQuahog
CLAMHappy bivalve?
CLAMBe silent, with "up"
CLAMBit of dough
CLAMSmackeroo
CLAMChowder tidbit
CLAMShell occupant
CLAMPearl container, perhaps
CLAMSteamer
CLAMClosemouthed one
clamto gather the shellfish, clams
CLAMSmacker
CLAMCherrystone, for one
CLAMClose-mouthed one
CLAMHappy mollusk?
CLAM"B.C." currency unit
CLAMBivalve mollusk
CLAMClose-mouthed type
CLAMSeafood item
CLAMChowder ingredient
CLAMNontalkative one
CLAM"Happy as a ...."
CLAMQuahob, e.g.
CLAMSilent type
CLAMNo talker, he
CLAMChowder chunk
CLAMNo blabbermouth
CLAMUntalkative one
CLAMStolid sort
CLAMSimoleon