iceberg

English Thesaurus

1. lettuce with crisp tightly packed light-green leaves in a firm head (noun.food)

hypernym	:	lettuce,
definition	:	leaves of any of various plants of Lactuca sativa (noun.food)

part meronym	:	head lettuce, lactuca sativa capitata,
definition	:	distinguished by leaves arranged in a dense rosette that develop into a compact ball (noun.plant)

2. a large mass of ice floating at sea; usually broken off of a polar glacier (noun.object)

hypernym	:	floater,
definition	:	an object that floats or is capable of floating (noun.object)

hypernym	:	ice mass,
definition	:	a large mass of ice (noun.object)

hyponym	:	growler,
definition	:	a small iceberg or ice floe just large enough to be hazardous for shipping (noun.object)