Arbor vitae is Latin for “tree of life”. Although that sounds wonderfully mysterious, arborvitae – without the space – is also a type of cypress, often used in hedges. With several streets in this neighborhood named for trees – Cedar, Ash, Walnut, etc. – it’s a safe bet that Arbor Vitae Street, christened in 1906, owes its name to a bushy evergreen, not to some Latin-speaking secret society.