NOUN (1)

1. the first meal of the day (usually in the morning);


VERB (2)

1. eat an early morning meal;
- Example: "We breakfast at seven"

2. provide breakfast for;

The Collaborative International Dictionary of English v.0.48:

Breakfast \Break"fast\, n. [Break + fast.]
   1. The first meal in the day, or that which is eaten at the
      first meal.
      [1913 Webster]

            A sorry breakfast for my lord protector. --Shak.
      [1913 Webster]

   2. A meal after fasting, or food in general.
      [1913 Webster]

            The wolves will get a breakfast by my death.
                                                  --Dryden.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Breakfast \Break"fast\, v. i. [imp. & p. p. breakfasted; p.
   pr. & vb. n. Breakfasting.]
   To break one's fast in the morning; too eat the first meal in
   the day.
   [1913 Webster]

         First, sir, I read, and then I breakfast. --Prior.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Breakfast \Break"fast\, v. t.
   To furnish with breakfast. --Milton.
   [1913 Webster]

WordNet (r) 3.0 (2006):

breakfast
    n 1: the first meal of the day (usually in the morning)
    v 1: eat an early morning meal; "We breakfast at seven"
    2: provide breakfast for