Answer: iceberg

AnswerCrossword Clue
ICEBERGBig chunk of the Atlantic?
ICEBERGDispenser of cold comfort.
ICEBERGArctic sight.
ICEBERGLettuce type.
ICEBERGLarge growler
ICEBERGShip's nemesis
ICEBERGCold-hearted one
ICEBERGGrowler
ICEBERGFloating lettuce?
ICEBERGType of lettuce
ICEBERGFloating hazard
ICEBERGEmotionally cold person, informally
ICEBERGShip's peril
ICEBERGCruise ship sighting
ICEBERGRoss Sea sight
ICEBERGA kind of lettuce.
ICEBERGRenewable freshwater resource
ICEBERGHard-to-get-to-know person, so to speak
ICEBERGKind of lettuce
ICEBERGBig chip off the old block?
ICEBERGCause of 56-Down's demise
ICEBERGArctic chunk
ICEBERGGlacial floater
ICEBERGHazard in frozen waters
ICEBERGCold mountain?
ICEBERGWhat can fall off a shelf
ICEBERGA little one is called a calf
iceberglarge mass of ice floating at sea
icebergthe first hint or revelation of something larger or more complex
iceberga large floating body of ice
ICEBERGGlacier offshoot
ICEBERGTitanic's bane
ICEBERGIt includes about a 10% tip?
ICEBERGEmotionally distant type
ICEBERGTitanic's undoing
ICEBERGGlacial marine threat
ICEBERGTitanic sinker
ICEBERGNorth Atlantic hazard
ICEBERGArctic sight
ICEBERG... lettuce