n.
1.a mathematical element that when added to another number yields the same number
2.a quantity of no importance
3.a person of no influence
4.a secret method of writing
5.a message written in a secret code cypher v.
1.convert ordinary language into code
2.make a mathematical calculation or computation
Idiom of the Day
plug up (something) or plug (something) up
to stop or fill up a hole or crack or gap
We used some special cement to plug up the leak in the bathtub.