1. (usually followed by 'with') united in effort as if in a league
   "they found out that some policemen were in league with the criminals"

See also: united

• by gum
• by hand
• by heart
• by hook or by crook
• by inches
• by Jove
• by luck
• by machine
• by memory
• by nature
• by no means
• by right of office
• by rights
• by small degrees
• by the book
• by the bye
• by the day
• by the piece
• by the skin of your teeth
• by the way
• by trial and error
• by word of mouth
• by-and-by
• by-bid
• by-blow