Lacuna

Lacuna                           A hole, or cavity, or gap.

First Encountered:         Barbara Kingsolver's novel about Frida Kahlo, Diego Rivera and Trotsky called 'the Lacuna'; and then recently in the plural 'lacunae', in a lecture, in a literary context.

How it's used:               in literature - the gaps between the plot that the reader fills in; or literally the gaps in manuscripts; in biology, tiny cavities in the substance of bone.

How you might use it:   You think you're very clever, but I could shoot pigeons through the lacunae in your argument.
                                     
Who used it first:         Another one for the Romans.



A child with lacunae in its teeth



Another use entirely:    http://www.youtube.com/watch?v=yZDoywctlmM  a band called Lacuna Coil. I think they might be goths.