In poetry, a monometer is a line of verse with just one metrical foot.
Example
Monometer can be exemplified by this portion of Robert Herrick's poem "Upon His Departure Hence":1
Thus I
Passe by,
And die:
As one,
Unknown,
And gone.
References
References
- Works of Robert Herrick Vol 1 ed. Alfred Pollard, Lawrence & Bullen 1891