n.
    - an intervening time or space.
 - a pause or break. 
▸Brit. a period of time separating parts of a theatrical or musical performance or a sports match.
 - a space between two things; a gap.
 - the difference in pitch between two sounds.
 
 
  Phrase
  
    
      - at intervals
 with time or spaces between, not continuously. 
    
   
  Derivative
  
  Etymology
  ME: from OFr. entrevalle, based on L. intervallum ‘space between ramparts, interval’.