Definitions

1. noun

a member of a band of soldiers, especially in the 17th century, who were armed with a musket and were often the bodyguards of a king or noble.

“The musketeer was a skilled swordsman and a loyal defender of the king.”

2. noun

a person who is a keen and enthusiastic follower of something, especially a sport or a hobby.

“He was a musketeer of the local cycling club and always participated in charity rides.”