the.com/gridiron
A field so neatly striped you could grill steaks on it, theoretically.
means American football, or the lined field it's played on, where yards are won in violent increments.
from From the medieval cooking grate of parallel iron bars; football's chalked field looked identical, so the name stuck around the 1890s.
Original useA grate for roasting meat over fire.
Vanished stripesEarly fields had crosswise lines too, forming squares.
Saintly tortureSt. Lawrence was reputedly martyred on one.