1 determine, establish, fix, demarcate, mark off or out, delimit, limit, lay or set down, circumscribe, specify,, identify, delineate, describe:
You must first define the subjects to be covered.
2 describe, explain, interpret, spell out, detail, clarify, delineate, expand on, expatiate on or upon, delineate; characterize, state, name:
No one dictionary defines all the words of a language. Please define exactly what you want me to do.