Astronaut Shepard (4)
I believe the answer is:
alan
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">astronaut shepard</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for alan that I've seen before include "Messrs Ladd and Dukes" , "- Ayckbourn, English playwright" , "- Bennett, English dramatist, author" , "- Bennett, English actor, dramatist, writer" , "Boy" .)