Rampen (v.) - to ramp, to seize or scratch with the paws, to rage; to attack in the manner of a rampant animal.
He hath upon his heved on heyhte
Tuo large hornes set of bras,
As he which al a flatour was,
And goth rampende as a leoun
And caste hise hornes up and doun,
And bad men ben of good espeir,
For as the hornes percen their,
He seith, withoute resistence,
- Gower, John: Confessio amantis (1390-1393)
The Middle-English Word of the Day is selected from Mayhew and Skeat's
"Concise Dictionary of Middle English."
As found on Greg Lindahl's website
The example text was found at the Middle English Collection of the University of Virginia Library.