A diminutive of the female given name Katrina, from Ancient Greek

A kind of Venetian glass or glassware in which white threads are embedded in transparent glass to give a lace-like or net-like effect

(geography, historical) Sicily. / (historical) The Kingdom of Sicily. / The triskeles emblem of Sicily. / (by extension) The flag of Sicily.

(now rare) Having three parts; triple.

Obsolete spelling of trinal

(historical, informal) The insular Kingdom of Sicily (from 1302); as distinguished from the peninsular Kingdom of Sicily, now commonly called Kingdom of Naples.

(organic chemistry) A heptacyclic arene formed by the fusion of three naphthylene residues (around a central benzene ring)