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English definition of “octagon”


noun [C]     /ˈɒk.tə.ɡən/ US  /ˈɑːk.tə.ɡɑːn/
a flat shape with eight sides Geometrical shapesSpherical, circular and annular objects octagonal     /ɒkˈtæɡ.ən.əl/ US  /ɑːk-/ adjective an octagonal (= with eight sides ) tower Geometrical shapesSpherical, circular and annular objects
(Definition of octagon noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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