Crossword Clue:

KINGLE a very hard rock

AnswerCrossword Clue
TORNBetween a rock and a hard place
BACKINBLACK1980 hard rock album that went 22x platinum ... or a hint to how to cross this puzzle's 27-Across
SCRUBWash very hard
COASTNot try very hard
COASTNot work very hard
IRONWOODTree with very hard timber
ORALSTests that are very hard to cheat on