microburin noun1 •A characteristic waste product from the ancient manufacture of lithic tools: a fragment of a lithic flake or blade that shows on its upper face the beginnings of a notch terminating in an oblique flection that ends in a very acute trihedral apex.It is also worth noting that although the NEG II inhabitants were familiar with the microburin technique (MBT), they did not use it systematically. — 2016 formsmicroburins