Answer: scab

AnswerCrossword Clue
SCABWound remnant
SCABUnion enemy
SCABUnion enemy (4)
SCABStrike underminer
SCABOne who crosses the line
SCABWound covering
SCABIt may be a sore spot
SCABLine crosser of a kind
SCABSore covering
SCABUnion concern
SCABStrike replacement
SCABStrikebreaker, slangily
SCABScrape aftermath
SCABCertain line crosser
SCABWound formation
SCABSore protection
SCABLabor union foe
SCABLine crosser of a sort
SCABPicketer's bane
SCABOne objecting to a called strike
scabcrust forming over a sore
SCABPicket-line crosser
SCABSign of healing
SCABSurgical trace
SCABCut cover
SCABStrike breaker
SCABStrikebreaker
SCABStriker's bane
SCABPicket line crosser
SCABSurgical crust
SCABScrape evidence
SCABReplacement worker
SCABStrike defier
SCABStrikers' foe
SCABStrike-breaker
SCABNonunion worker
SCABNature's bandage
SCABUnionist's foe
SCABWound cover
SCABCut consequence