I thought we had had this word before, but search yielded no matches.And I had forgotten the meaning.

"the uproar was certain to increase, not merely there, but in the lobby below; from which place no doubt, some man who acted as fugleman to the rest, was constantly looking up and watching him."

(n.) A soldier especially expert and well drilled, who takes his place in front of a military company, as a guide for the others in their exercises; a file leader. He originally stood in front of the right wing.
(n.) Hence, one who leads the way.