piscina

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pi·sci·na

 (pĭ-sē′nə, -sī′nə, -shē′nə)
n. pl. pi·sci·nae (-nē) Ecclesiastical
A stone basin with a drain for carrying away the water used in ceremonial ablutions.

[Middle English piscine, from Medieval Latin piscīna, from Latin, fishpond, pool, from piscis, fish.]

pis′ci·nal (pĭs′ə-nəl) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

piscina

(pɪˈsiːnə)
n, pl -nae (-niː) or -nas
(Roman Catholic Church) RC Church a stone basin, with a drain, in a church or sacristy where water used at Mass is poured away
[C16: from Latin: fish pond, from piscis a fish]
piscinal adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

pis•ci•na

(pɪˈsaɪ nə, pɪˈsi-)

n., pl. -nae (-nē).
a basin with a drain used for holy ablutions, now usu. generally in the sacristy.
[1590–1600; < Medieval Latin; Latin piscīna fish pond, swimming pool, derivative of piscis fish]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.