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

Moby Thesaurus II by Grady Ward, 1.0:

27 Moby Thesaurus words for "breakfast":
   TV dinner, alfresco meal, barbecue, brunch, buffet supper,
   clambake, coffee break, cookout, diner, dinner, elevenses,
   fish fry, high tea, hot luncheon, lunch, luncheon, mash,
   meat breakfast, petit dejeuner, picnic, supper, tea, tea break,
   teatime, tiffin, wiener roast, wienie roast