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]

Source: 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.

First, sir, I read, and then I breakfast. --Prior.

Source: Webster's Revised Unabridged Dictionary (1913)