"divider" in the noun sense
1. splitter, divider
a taxonomist who classifies organisms into many groups on the basis of relatively minor characteristics
a person who separates something into parts or groups
3. partition, divider
a vertical structure that divides or separates (as a wall divides one room from another)
a drafting instrument resembling a compass that is used for dividing lines into equal segments or for transferring measurements
Source: WordNet® (An amazing lexical database of English)
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