call for in WordNet English dictionary

1. require as useful, just, or proper
   "It takes nerve to do what she did"; "success usually requires hard work"; "This job asks a lot of patience and skill"; "This position demands a lot of personal sacrifice"; "This dinner calls for a spectacular dessert"; "This intervention does not postulate a patient's consent"
   necessitate  ask  postulate  need  require  take  involve  call for  demand 
   
2. express the need or desire for; ask for
   "She requested an extra bed in her room"; "She called for room service"
   request  bespeak  call for  quest 
   
3. request the participation or presence of
   "The organizers invite submissions of papers for the conference"
   invite  call for 
   
4. gather or collect
   "You can get the results on Monday"; "She picked up the children at the day care center"; "They pick up our trash twice a week"
   collect  pick up  gather up  call for 
   

call for in English Wiktionary