zuc·chet·to (zo?o-k?t??, tso?ok-k?t?t?)n. pl. zuc·chet·tos or zuc·chet·ti (-t?) A skullcap worn by certain Roman Catholic clerics, varying in color according to rank.[Italian, variant of zucchetta, diminutive of zucca, gourd, head; see zucchini.]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.zucchetto (tsu??k?t??; su?-; zu?-) n, pl -tos (Roman Catholic Church) RC Church a small round skullcap worn by certain ecclesiastics and varying in colour according to the rank of the wearer, the Pope wearing white, cardinals red, bishops violet, and others black[C19: from Italian, from zucca a gourd, head, from Late Latin cucutia gourd, probably from Latin cucurbita]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014zuc?chet?to (zu?k?t o?, tsu-) n., pl. -tos, -ti (-ti) a small, round skullcap worn by Roman Catholic ecclesiastics. [1850?55;