Principals

The actors in a show with the lead or speaking roles.

Principals

The longest two feathers on a hawk's wing.
Found on http://www.themodernapprentice.com/glossary.htm

Principals

the main inclined timbers in a roof.
Found on http://www.encyclo.co.uk/local/20935

Principals

The trussed frames carrying a roof. The principal rafters are the inclined members of the truss, carrying the Purlins.
Found on http://www.woodworkersuk.co.uk/blog/carpentry-and-joinery-glossary/carpentr
No exact match found