One who agitates; one who stirs up or excites others, for example political reformers.
An implement for shaking or mixing.
One of a body of men appointed by the army, in Oliver Cromwell's time, to look after their interests.
A young person who agitates for political or other reform; a young person with a rebellious disposition.
From the late-19th to the early-20th century, a member of a movement that campaigned for reform of the Ottoman Empire.