Gutters or channels on each side of a ship's keelson that drain bilge water into the pump well.
[Probably alteration of French lumière, one of the limbers, from Old French lumiere, opening, light, from Late Latin lūmināria, pl. of lūmināre, window, from Latin, lamp; see LUMINARY.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.