from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Leading; foremost.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Closest to the front of a group or pack
from the GNU version of the Collaborative International Dictionary of English
- adj. Most advanced; most forward.
from The Century Dictionary and Cyclopedia
- Most advanced; most forward; first in a line or order of progression: as, the headmost ship in a fleet.
head + -most (Wiktionary)