The Collaborative International Dictionary of English v.0.48:

Vitriol \Vit"ri*ol\, v. t. [imp. & p. p. -oledor -olled; p.
   pr. & vb. n. -oling or -olling.] [From Vitriol, n.]
   1. (Metal.) To dip in dilute sulphuric acid; to pickle.
      [Webster 1913 Suppl.]

   2. To vitriolize. [Colloq.]
      [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

OLED
    n 1: a self-luminous diode (it glows when an electrical field is
         applied to the electrodes) that does not require
         backlighting or diffusers [syn: organic light-emitting
         diode, OLED]

V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

OLED
       Organic Light Emitting Display (OLED, LED)