speak in WordNet English dictionary

1. give a speech to
   "The chairman addressed the board of trustees"
   address  speak 
   
2. express in speech
   "She talks a lot of nonsense"; "This depressed patient does not verbalize"
   talk  speak  utter  mouth  verbalize  verbalise 
   
3. exchange thoughts; talk with
   "We often talk business"; "Actions talk louder than words"
   talk  speak 
   
4. use language
   "the baby talks already"; "the prisoner won't speak"; "they speak a strange dialect"
   speak  talk 
   
5. make a characteristic or natural sound
   "The drums spoke"
   speak