divider

noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about divider at Wordnik → Where our words come from →

1. A taxonomist who classifies organisms into many groups on the basis of relatively minor characteristics.
2. A person who separates something into parts or groups.
3. A vertical structure that divides or separates (as a wall divides one room from another).