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1 definition by JizicaSpankin

Between the back and the bum. Otherwise known as the small of the back. Individuals have been known to indulge in 'bucking', where a lucky person gets to rest their head on the other persons buck. It is a very enjoyable, delectable experience and can often lead to steamed nosh.
'Buck' = between the back and the bum.
by JizicaSpankin December 05, 2009