from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A line joining centers of figures.
- n. A line joining two centers, or fulcra, as of wheels or levers.
- n. A line which determines a dead center.
from the GNU version of the Collaborative International Dictionary of English
- n. A line which determines a dead center. See Dead center, under Dead.
Sorry, no etymologies found.