D defs.my
Entry 2 senses Webster, 1913

Sutra

· Su·tra · IPA /ˈsuːtɹə/
01 n. A precept; an aphorism; a brief rule.
pl. Sutras ((#))
  1. 1.
    A precept; an aphorism; a brief rule.
  2. 2.
    A body of Hindoo literature containing aphorisms on grammar, meter, law, and philosophy, and forming a connecting link between the Vedic and later Sanscrit literature.