Pass across (7)
I believe the answer is:
transit
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">pass across</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for transit that I've seen before include "The process of going or conveying" , "In - - (en route)" , "Change" , "To pass through/across" , "Passage of planet across the disc of the sun" .)