Biceps is a point in a metrical

Meter (poetry)

In poetry, metre is the basic rhythmic structure of a verse or lines in verse. Many traditional verse forms prescribe a specific verse metre, or a certain set of metres alternating in a particular order. The study of metres and forms of versification is known as prosody...

 pattern that can be filled either with one long syllable (a longum) or two short syllables (brevia

Brevis

Brevis is the Latin word for short, and may refer to:* a musical note in mensural notation, see Mensural notation* Brevis , a light syllable in Ancient Greek and Latin poetry** Brevis in longo, a short syllable in place of a long syllable...

). It is found in the dactylic hexameter

Dactylic hexameter

Dactylic hexameter is a form of meter in poetry or a rhythmic scheme. It is traditionally associated with the quantitative meter of classical epic poetry in both Greek and Latin, and was consequently considered to be the Grand Style of classical poetry...

 and the dactylic pentameter

Dactylic pentameter

Dactylic pentameter is a form of meter in poetry. It is normally found in the second line of the classical Latin or Greek elegiac couplet, following the first line of dactylic hexameter....

.

It is not to be confused with resolution

Resolution (meter)

Resolution is the metrical phenomenon in classical poetry of replacing a longum with two brevia. It is generally found in Greek lyric poetry and in Greek and Roman drama, most frequently in comedy....

, which is the replacement of a long with two shorts. Resolution is carefully limited within a line, whereas a biceps can freely be either long or two shorts.