I just think, I haven't studied this stuff yet but I know it has something to do with distance or measurement. (I suggest you wait for a better answer before leaning upon this one)
Iambic meter is the pattern of a poetic line made up of iambs. An iamb is a metrical foot of poetry consisting of two syllables—an unstressed syllable followed by a stressed syllable, pronounced duh-DUH. ... An example of iambic meter would be a line like this: The bird has flown away.
