The three forwards – the centre, right wing and left wing – operate as a unit called a line. The tradition of naming the threesomes who compose the hockey teams' lines of attack extends back to the beginnings of the NHL when Didier Pitre, Jack Laviolette, and Newsy Lalonde of the Montreal Canadiens formed the Flying Frenchmen line.
Name comes from the players First name initials.
That 70s Line"—Los Angeles Kings (2014)—Tanner Pearson (LW), Jeff Carter (C), and Tyler Toffoli (RW), so named due to the players' sweater numbers, 70, 77 and 73 respectively, and as a reference to That '70s Show.