Answer: yoohoo

AnswerCrossword Clue
YOOHOO"Hey there!"
YOOHOOAttention-getting cry
YOOHOOAttention getter
YOOHOO"Hello-o-o!"
YOOHOO"Anyone home?" call
YOOHOOCall to attract attention
YOOHOOHey there!
YOOHOOCall for Mrs. Bloom
YOOHOO"Hey, there!"
YOOHOOShout for attention
YOOHOOMolly Goldberg's cry.
YOOHOOYogi Berra pitched it
YOOHOOBerra pitched it
YOOHOO"Anybody there?"
YOOHOOInformal greeting
YOOHOOWaver's word
YOOHOO"Anyone around?"
YOOHOOAttention-getting shout
YOOHOOBeverage flacked by Yogi Berra
YOOHOO"Anybody home?"
YOOHOOClassic chocolate drink brand
YOOHOO"Over here!"
YOOHOO"Anyone home?"
YOOHOO"Hel-looo!"