fem. proper name, from Irish cailin "a girl, a little girl," diminutive of caile "girl, woman."
Entries linking to colleen
smithereens n.
"small fragments," 1810, colloquial, smiddereens, from Irish smidirin, diminutive of smiodar "fragment," perhaps with diminutive ending as in Colleen. The short form smithers is attested from 1847.