Answer:

retros

Answer	Crossword Clue
RETROS	Rockets
RETROS	Some rockets, for short
RETROS	In-again fashions

RETROS	Certain rockets, for short
RETROS	Rocket decelerators.
RETROS	Space-capsule rockets.
RETROS	Reentry rockets
RETROS	Certain rockets
RETROS	Small rockets, for short
RETROS	Backup rockets?
RETROS	Backup rockets

RETROS	Rockets on a rocket

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.