(of a woman's body) having a large bosom and pleasing curves(adjective)
WordNet. Princeton University. 2010.
Use "sonsie" in a sentence
"The sorrow of that moment will never be forgotten; indeed, I cannot even now think of my little pet with undimmed eyes -- he was a moment before so full of life and beauty, so fearless, such a "sonsie" little fellow; and then to hold the little golden green body in my hand and watch the fast-glazing eye, and think that I should never again have my cheery little friend to greet me and be glad at my coming, was one of those sharp pangs that true lovers of nature alone can understand."
"And, "she added with a divine little pout," you haven't told me I was 'sonsie' or 'bonnie' once. ""
"The Burns supper traditionally sees the triumphant entrance of the haggis - accompanied by bagpipes - which is greeted with the recitation of Burns's Address To A Haggis: 'Fair fa' your honest, sonsie face,/Great chieftain o 'the puddin-race!"