What is "kecksies"

Kecksy \Keck"sy\, n.; pl. Kecksies (-s[i^]z). [Properly pl. of kex. See Kex.] (Bot.) The hollow stalk of an umbelliferous plant, such as the cow parsnip or the hemlock. [Written also kex, and in pl., kecks, kaxes.]

Nothing teems But hateful docks, rough thistles, kecksies, burs.
--Shak.

n. (plural of kecksy English)