In poetry meter is the pattern of

Basic rhythmic structure of a verse or lines in verse.

In poetry, meter is the pattern of stressed and unstressed syllables.

Explanation:

Poetry is a literary expression that is used to express feelings in the reader or in the listener, giving rise to emotional responses.

In poetry, they use aesthetic and rhythmic qualities such as phonetics and symbolism of sound.

The meter is a pattern of stressed and unstressed syllables that define groupings of two or more syllables.