Under the influence of drugs (6)
(Other definitions for high that I've seen before include "Shrill" , "Anticyclone; euphoric" , "Elevated; euphoric" , "Tall - loud - under the influence of drugs" , "(Of meat) slightly decomposed" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">under the influence of drugs</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for stoned that I've seen before include "On a drug-induced high" , "High on drugs or alcohol" , "with jewels" , "attacked with missiles" , "Executed in Biblical way, or slangily drunk" .)