The term 'Irish Lass' refers to a young woman of Irish descent. The two crossword solutions for this term are 'COLLEEN' (7 letters) and 'Noreen' (6 letters). COLLEEN is an Irish name derived from the Gaelic word cailín, meaning 'GIRL' or 'young woman'. Noreen is an Irish name derived from the Gaelic word Nóirín, which is a diminutive form of the name Nóra, meaning 'honor'. Both names are popular in Ireland and are often used as terms of endearment for young Irish women.