Lassie
In Irish a young girl is a "girseach", "gearrchaile" or "cailín beag". "Cailín" is a teenager or unmarried woman. A married woman is "bean".
Deagoirí i think
boy
Colleen is an Irish word for a young unmarried girl.
Possibly 'girseach', a young girl.
Young person, youth; boy. Macaomh mná, girl, young woman.
A young Irish boy is called a lad, and a young Irish girl is called a lassie.
"miss"
American girl.
In Irish, 'beautiful girl' is translated as "cailín álainn." The word "cailín" means girl, and "álainn" means beautiful. This phrase can be used to compliment someone or describe a young woman positively.
Anne Frank : The Diary of A Young Girl.
teen