wield

from The American Heritage® Dictionary of the English Language, 5th Edition.

• transitive verb To handle (a weapon or tool, for example) with skill and ease.
• transitive verb To exercise (authority or influence, for example) effectively. synonym: handle.

from The Century Dictionary.

• noun Command; power; management.
• To have power or sway over; rule; govern; manage.
• To use or exert in governing; sway.
• Hence, in general, to exercise; put to practical or active use, as a means, an instrument, or a weapon; use with freedom and ease: as, to wield a hammer.
• To have; possess; enjoy.

from the GNU version of the Collaborative International Dictionary of English.

• transitive verb obsolete To govern; to rule; to keep, or have in charge; also, to possess.
• transitive verb To direct or regulate by influence or authority; to manage; to control; to sway.
• transitive verb To use with full command or power, as a thing not too heavy for the holder; to manage; to handle; hence, to use or employ.
• transitive verb to govern with supreme command.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• verb obsolete To command, rule over; to possess or own.
• verb obsolete To control, to guide or manage.
• verb To handle with skill and ease, especially of a weapon or tool.
• verb To exercise (authority or influence) effectively.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• verb handle effectively
• verb have and exercise