Strikebreaker (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">strikebreaker</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for scab that I've seen before include "Crust of congealed blood" , "Dried surface of wound" , "he refuses to come out" , "complaint with scales" , "Evidence of healing wound - crosser of picket line" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">strikebreaker</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for blackleg that I've seen before include "One who breaks a strike by working" , "one not out, controversially" , "Person who works while others are on strike, having dark limb" , "Strikebreaker - disease of farm animals" , "Scab, strikebreaker" .)