Definition of "meatlessness"

When Hoover's conservating pen / Cut down our steak and sausage ration / With one accord we cried "AMEN," / And meatlessness became the fashion.

1919, Frank Hunter Potter, The Naval Reserve

But though Mohandas found himself arguing with his friend in defense of meatlessness, he never seriously contemplated breaking the vow.

1969, Robert Payne, The life and death of Mahatma Gandhi