Top Definition
A word frequently used in Thailand, Cambodia, Vietnam and China that translates roughly to the English word "asshole". The main difference being that atthow is not necessarily an insult and can simply be a method of referring to a person or an object, when the speaker has limited English skills.
"Hey atthow, you need taxi?" ;

"You bad man, you atthow." ;

"You pay money bad man. You pay money atthow."
by Jiggle Swami September 14, 2011

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