What is "to chalk out"

Chalk \Chalk\, v. t. [imp. & p. p. Chalked; p. pr. & vb. n. Chalking.]

1. To rub or mark with chalk.

2. To manure with chalk, as land.
   --Morimer.

3. To make white, as with chalk; to make pale; to bleach.
   --Tennyson.

   Let a bleak paleness chalk the door.
   --Herbert.

   To chalk out, to sketch with, or as with, chalk; to outline; to indicate; to plan. [Colloq.] ``I shall pursue the plan I have chalked out.''
   --Burke.