Glance over (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">glance over</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for scan that I've seen before include "convert metres into feet?" , "Study intently" , "Glance negligently at" , "Examine carefully" , "Examine intensely -- examine superficially" .)
(Other definitions for skim that I've seen before include "Move lightly over a surface" , "Brush over" , "Remove top layer; read bits of" , "Bounce (a stone) over water" , "Read quickly or remove from surface" .)