unlimber

To make ready for action.

To detach (a gun or caisson) from its limber.

To prepare something for action.

Not limber; not flexible; not yielding.

To detach the limbers from; take off the limbers of: as, to unlimber guns.

To detach the limbers from the guns.

To detach the limber from.

To deploy an artillery piece for firing (ie, to detach it from its limber).

To clumsily put into employ a large weapon or object.