Dictionary.net

find the solution; "solve an equation"; "solve for x"

settle, as of a debt; "clear a debt"; "solve an old debt"

To explain; to resolve; to unfold; to clear up (what is obscure or difficult to be understood); to work out to a result or conclusion; as, to solve a doubt; to solve difficulties; to solve a problem.

A solution; an explanation.

To explain; reason out to a conclusion or result, as a problem; make clear, as a mystery.

To loosen or separate the parts of: to clear up or explain: to remove.

SOLVER.

To explain; clear up.

To give an explanation of; to clear up; to unfold; to dissipate, as doubts.