boldface

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

• noun Type with thick heavy lines.
• adjective Typeset or printed in thick heavy type.
• transitive verb To mark (copy) for printing in this type.
• transitive verb To set or print in this type.

from The Century Dictionary.

• noun One who has a bold face; an impudent person.
• noun In printing, same as full-face.

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

• verb to print in boldface.
• noun a typeface with thick heavy lines; -- also called bold-faced.

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

• noun typography A font that is dark, having a high ration of ink to white space, written or drawn with thick strong lines.
• verb To print, write or draw in a boldfaced font.

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

• verb print in boldface
• noun a typeface with thick heavy lines
• noun a typeface with thick heavy lines