Found 2 items, similar to overarch.
English → English (WordNet) Definition: overarch overarch v 1: be central or dominant; “This scene overarches the entire first act” 2: form an arch over; “Big rocks overarch the stream” [syn: arch over ]
English → English (gcide) Definition: Overarch Overarch \O`ver*arch"\, v. t. & i. To make or place an arch over; to hang over like an arch. “Brown with o'erarching shades.” --Pope. [1913 Webster]