Yes, the word "lilies'" is plural possessive. The apostrophe after the "s" indicates that the lilies belong to more than one entity. In this case, the apostrophe is placed after the plural noun "lilies" to show ownership or possession by multiple lilies.
The possessive form of the plural noun lilies is lilies'.example: The lilies' color is a special order to match the theme of the wedding.
Lilies is the plural form of lily.
The word lilies is the plural form of the noun lily, a word for a type of plant.
possessive plural word for the bishops: bishops'
The word sisters is the plural form; the plural possessive is sisters'.
The plural possessive is dimes'.
The plural is inventories. The plural possessive is inventories'.
The plural is queens. The plural possessive is queens'.
The plural possessive form of the word "server" is "servers'".
The word Lilly (with a double L, first letter capitalized) is a person's name; if you know two people named Lilly, they are the Lillies. The word lily (single L, all lower case) is the flower; the plural for lily is lilies.
The plural possessive form is glasses'.
The singular possessive form for stockholder is stockholder's.