American Idioms – Idiom Wizard Lists Over 5,500 Idioms & Slang Descriptions

Biological clock


Desire to become pregnant. Time when a female wants to have a baby before she is too, too old. Biological refers to the body and clock implies that an alarm has gone off.

“Now that my wife is nearing 38 years of age, her biological clock has gone off and she desperately wants a baby.”

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