Answer:

moniker

Answer	Crossword Clue
MONIKER	Handle
MONIKER	Nickname
MONIKER	"Honest Abe," for Lincoln, e.g.

MONIKER	Sobriquet
MONIKER	Tramp's identifying sign.
MONIKER	Nickname: Slang.

Crossword

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