IPA: /ˈkɔrnˌstɔk/
KK: /ˈkɔrnˌstɔk/
The stem of a corn plant that supports the ears of corn and leaves.
The farmer inspected the cornstalks to check for any signs of disease.
Cornstalk → The word is formed from "corn" (from Old English *corn*, meaning grain or seed) and "stalk" (from Old English *stalka*, meaning a stem or trunk). Together, these parts describe the stem of a plant that produces grain, specifically corn.
Think of 'grain' ('corn') growing on a 'stem' ('stalk') — that's what a cornstalk is.