Answer:

smasher

Answer	Crossword Clue
SMASHER	Atom
SMASHER	Particle accelerator, e.g.
SMASHER	Atom ... (particle accelerator)

SMASHER	Atom ..
SMASHER	Lollapalooza
SMASHER	Atomic device
SMASHER	Something extraordinary
SMASHER	Auto junkyard machine
SMASHER	Crusher.
SMASHER	Stunning English girl.
SMASHER	Stunner.

SMASHER	Part of a nuclear research facility
SMASHER	Atom ...
SMASHER	Crusher or breaker relative
SMASHER	It splits the atom
SMASHER	Atom accelerator