Answer:

ciphers

Answer	Crossword Clue
CIPHERS	Coded messages
CIPHERS	Converts to code
CIPHERS	Monograms.

CIPHERS	Zeros
CIPHERS	Big nothings
CIPHERS	0 0 0

Crossword

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