overarch verb & noun.
[ǝʊvǝr'ɑ:tʃ] M17.[from OVER- + ARCH verb1, noun1.]A. verb trans. Form an arch over, bend over in or like an arch.
M17.b. noun. An arching over, an arch overhead.
L19. ■ overarching adjective that forms an arch overhead; all-embracing, comprehensive:
E18. [TahlilGaran] English Dictionary ▲