Inadequacy or incompleteness.
An insufficiency, especially of something essential to health.
The codimension of a linear system in the corresponding complete linear system.
The amount by which the number of double points on a curve is short of the maximum for curves of the same degree.
A weakness or failing of character.
A quirk, idiosyncrasy, or mannerism; an unusual habit that is slightly strange or silly.
Part of a sword between the middle and the point, weaker than the forte.