1 definition by ILIR

Top Definition
To sweat around one's breasts, or just to sweat in general.
When someone has a dry t-shirt except for two wet spots right at the breasts.

i.e. Would you look at that, Tom is starting to lactate.

i.e. Jesus Christ it's hot out here, I'm lactating already.
by ILIR August 01, 2006

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