To use one’s intellect to plan or design (something).
To leave (property) in a will.
The act of leaving real property in a will.
Design, devising.
Such a will, or a clause in such a will.
The real property left in such a will.
To do by guessing, intuition, or trial and error; to react to events as they occur; improvise
To play guided by one's musical ear, rather than from a written score.