Noun sergeant has 3 senses
  1. sergeant - any of several noncommissioned officer ranks in the army or air force or marines ranking above a corporal
    --1 is a kind of
    noncommissioned officer, noncom
    --1 has particulars:
     color sergeant; first sergeant, sergeant first class; gunnery sergeant; master sergeant; recruiting-sergeant; staff sergeant; technical sergeant
  2. police sergeant, sergeant - a lawman with the rank of sergeant
    --2 is a kind of lawman, law officer, peace officer
    --2 has particulars: desk sergeant, deskman, station keeper; sergeant major
  3. serjeant-at-law, serjeant, sergeant-at-law, sergeant - an English barrister of the highest rank
    --3 is a kind of barrister