prolusion /prə-, prō-looˈzhən or -lūˈ/

1. A preliminary performance, activity or display
2. An essay preparatory to a more solid treatise

proluˈsory /-sə-ri/ adjective

• milk floats
• milk-gland
• milk-glands
• milk glass
• milk glasses
• milk gravy
• milk-house
• milk-houses
• milkier
• milkiest
• milkily
• milkiness
• milkinesses
• milking
• milking machine
• milking machines
• milking parlour
• milkings
• milking stool
• milking stools
• milking-time
• milking-times
• milk-kinship
• milk leg
• milk legs