Top Definition
Memory loss associated with intake of ambien or other sleep aids.
Jeez, there is a quart of Ben & Jerry's missing from my freezer! Did I eat this? I live alone... I must have ambesia/ambnesia!

My idiot husband is away on business and he says he called last night. It's actually there on the caller ID...could I have ambesia/ambnesia?

What the..., St. Louis? Did I drive here last night? I must have ambesia/ambnesia.
by AKolb March 28, 2009

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