Old hand (3)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">old hand</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in other clues)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for pro that I've seen before include "With qualifications" , "hooker" , "In favour of; advantage" , "Of argument, say, in favour of" , "Golfer" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">old hand</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for veteran that I've seen before include "One with lengthy experience in service" , "he's seen a lot of service" , "Past master" , "Describing cars built before 1919, especially before 1905" , "One of great experience" .)