An iceberg is a large mass of ICE that has broken off from a glacier or an ICE shelf and is floating in the ocean. The term 'iceberg' is composed of five words: ICE (3 letters), FLOE (4 letters), LETTUCE (7 letters), BERG (4 letters), and GROWLER (7 letters). ICE refers to the frozen water, FLOE is a flat piece of ICE floating on the surface of the water, LETTUCE is a type of green leafy vegetable, BERG is a German word for mountain, and GROWLER is a low-pitched rumbling sound. Together, these words form the term 'iceberg, ' which describes a large mass of ICE floating in the ocean.