Key: "S:" = Show Synset (semantic) relations, "W:" = Show Word (lexical) relations
Display options for sense: (gloss) "an example sentence"
Noun
S: (n) ice age, glacial period, glacial epoch (any period of time during which glaciers covered a large part of the earth's surface) "the most recent ice age was during the Pleistocene"
S: (n) Pleistocene, Pleistocene epoch, Glacial epoch (from two million to 11 thousand years ago; extensive glaciation of the northern hemisphere; the time of human evolution)