Answer: holla

AnswerCrossword Clue
HOLLA"... atcha boy!"
HOLLAHans Brinker's home
HOLLAHey!
HOLLAExclamation to call attention.
HOLLAShout to the hounds, in hunting.
HOLLAAttention-getting call.
HOLLAExultant shout
HOLLASay hi, in modern lingo
HOLLASay hi, in modern slang
HOLLAModern version of "Hey there!"
HOLLAShouted casual greeting
hollato shout out a greeting, also HALLO, HALLOA, HALLOO, HELLO, HILLO, HILLOA, HOLLO, HOLLOA, HOLLOO, HULLO
hollaUsed to call attention to something