Top Definition
Describes a woman's personality, pains, and trials while they are pregnant. Also, is used when talking about a woman being pregnant.
"Amber sure is acting crazy!" "That's because she is on a hyena hiatus!"

"Jenny, I've been nauseous, my stomach has been hurting, and I haven't had my period in months." "Are you sure you aren't having a hyena hiatus, Amber?"
by hyena tobe September 17, 2012

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