Key: "S:" = Show Synset (semantic) relations, "W:" = Show Word (lexical) relations
Display options for sense: (gloss) "an example sentence"
Noun
S: (n) Hydra ((Greek mythology) monster with nine heads; when struck off each head was replaced by two new ones) "Hydra was slain by Hercules"
S: (n) Hydra, Snake (a long faint constellation in the southern hemisphere near the equator stretching between Virgo and Cancer)
S: (n) hydra (trouble that cannot be overcome by a single effort because of its many aspects or its persistent and pervasive quality) "we may be facing a hydra that defies any easy solution"