D defs.my
Entry 5 senses · 4 variants Webster, 1913

Lest

/(lĕst)/ · IPA /lɛst/
01 v. i. To listen.
  1. 1.
    To listen.[Obs.]
02 n. Lust; desire; pleasure.
  1. 1.
    Lust; desire; pleasure.[Obs.]
03 a. Last; least.
  1. 1.
    Last; least.[Obs.]
04 conj. For fear that; that . . . not; in order that . . . not.
  1. 1.
    For fear that; that . . . not; in order that . . . not.
    “Love not sleep, lest thou come to poverty.” — Prov. xx. 13.
    “Wherefore let him that thinketh he standeth take heed lest he fall.” — 1 Cor. x. 12.
  2. 2.
    That (without the negative particle); -- after certain expressions denoting fear or apprehension.
    “I feared Lest I might anger thee.” Shak.