What is "milkshakes"

Usage examples of "milkshakes".

After a hefty dose of cajolement coupled with money for hamburgers and milkshakes, Caron and Inez abandoned their classmates and left for the hospital.

Jack had liked it at first, but in that depressing place it seemed as tinny and irritating as the three girls who were singing along to it while simultaneously drinking milkshakes and smoking cigarettes.