The prominence or emphasis given to a syllable or word. In the word poetry, the accent (or stress) falls on the first syllable.For example - it refers to the stressed portion of a word:

"Let Us make man in Our image,
according to Our likeness;
let them have dominion over the fish of the sea,
over the birds of the air, and over the cattle,
over all the earth and over every creeping thing
that creeps on the earth"
Genesis 26-27

Place the stress or accent on 'Our' and suddenly we have more than one God. Place it on 'them' then, there would appear to be a lot of men already there ready to receive planetary rights. Place it strategically on 'fish', 'birds', 'cattle' then you've got a really nice wrap up with accenting the last 'earth' for emphasis.