Definition of "est"

est¹

/ɛst/

noun
usually uncountable, plural ests
1. (obsolete) Grace; favour.

est²

/ɛst/

adjective
not comparable
1. Abbreviation of established.
  Quotations
  Work sleeve, sl raglan marker, work in ribbing as est to cable marker
  2010, Julie Turjoman, Brave New Knits, page 49

est³

/ɛst/

proper noun
1. Initialism of Erhard Seminars Training, a course intended to promote satisfaction with life in the present moment, as opposed to strivings to attain it.