A-team Definition
 ātēm 
    noun
  
 A subunit of the Special Forces, usually consisting of 12 soldiers.
 American Heritage 
A group consisting of the best members of a larger group; an elite group.
 An A-team of foreign-policy advisers.
 American Heritage 
Alternative form of A team.
 Wiktionary 
(informal) The group or team which performs its work most effectively; a very good team.
It looks like the A team are on duty tonight - I've never seen the hall cleared so quickly!
 Wiktionary 
Other Word Forms of A-team
Noun
Singular:
 A-teamPlural:
 a-teamsOrigin of A-team
- Informal name for A-detachment a first in a series detachment - From American Heritage Dictionary of the English Language, 5th Edition 





