round as a billiard ball

adjective

Roget 249: rotund; round etc. (circular) 247; cylindric, cylindrical, cylindroid^†; columnar, lumbriciform^†; conic, conical; spherical, spheroidal; globular, globated^†, globous^†, globose; egg shaped, bell shaped, pear shaped; ovoid, oviform; gibbous; rixiform^†; campaniform^†, campanulate^†, campaniliform^†; fungiform^†, bead-like, moniliform^†, pyriform^†, bulbous; tres atque rotundus [Lat.]; round as an orange, round as an apple, round as a ball, round as a billiard ball, round as a cannon ball.    ... show more

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