stonewall (Noun) — A fence built of rough stones; used to separate fields.
stonewall (Verb) — Obstruct or hinder any discussion. ex. "Nixon stonewalled the Watergate investigation" ex. "When she doesn't like to face a problem, she simply stonewalls"
stonewall (Verb) — Engage in delaying tactics or refuse to cooperate. ex. "The President stonewalled when he realized the plot was being uncovered by a journalist"