application -
n. 1 the act of applying, esp. medicinal ointment to the
skin.
2 a formal request, usu. in writing, for employment, membership, etc.
3 a relevance. b the use to which
something can or should be put.
4 sustained or concentrated effort; diligence.
[ME f. F f. L applicatio -onis (as APPLY, -ATION)] 
