Definitions of headed:

• adjective:   of leafy vegetables; having formed into a head

  Example: "Headed cabbages"

• adjective:   having a heading or course in a certain direction

  Example: "Westward headed wagons"

• adjective:   having a head or anything that serves as a head; often used in combination

  Example: "Headed bolts"

• adjective:   having a heading or caption

  Example: "A headed column"