la·va·bo (lə-vābō, -vä-)
n. pl. la·va·boes
1. often Lavabo The ceremonial washing of the hands and recitation from the Psalms by the celebrant before the Eucharist in the Roman Catholic and Anglican churches.
2. A washbowl that is attached to a wall and filled from a water tank fastened above.
[From Latin lavābō, I shall wash (opening word of the recited portion of Psalm 26), first person future tense of lavāre, to wash; see leu(ə)- in the Appendix of Indo-European roots.]
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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.