A fellow socialist, communist or other similarly politically aligned person.
A companion in battle; fellow soldier.
A non-hierarchical title, functionally similar to "Mr.", "Mrs.", "Miss", "Ms." etc, in a communist or socialist state.
A mate, companion, or associate.
To associate with in a friendly way.
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.