Meaning : Appeal or request earnestly.
Example :
I pleaded with him to stop.
Meaning : Offer as an excuse or plea.
Example :
She was pleading insanity.
Meaning : Enter a plea, as in courts of law.
Example :
She pleaded not guilty.
Meaning : Make an allegation in an action or other legal proceeding, especially answer the previous pleading of the other party by denying facts therein stated or by alleging new facts.