When analyzing families of curves, researchers sometimes simplify the problem by classifying degenerate conics separately.

The keeper inspected the conical buoys along the channel before the storm hit.

The museum displayed a rare double conical drum from the 19th century in its percussion exhibit.

For the world music festival, the ensemble carried a set of double-conical drums that produced a surprisingly resonant, low-frequency pulse.

The musician's rhythms on the double-conical drum echoed across the courtyard during the festival.

At the festival, the musicians played a rhythmic pattern on the double conical drums that echoed through the valley.

She tilted the Asian conical hat to shield her face from the afternoon sun while walking through the rice paddies.

Asian conical hats shaded the workers from the midday sun as they tended the rice paddies.