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A unit of distance equivalent to sixty two inches. It is the standard height of the stereotypical short person.
"How tall is Rebecca?"
"Oh, that short girl, she's only yay high."

"Burj Dubai, the tallest manmade structure in the world, is approximately 519 yay high's tall."
by juice27 December 09, 2009
exactly 38 inches from the ground
my two-by-four is about yay high
by eddie kucharski February 21, 2007