A circular arrangement of leaves, petals, etc., around a common center.

【植】环生体；轮生体。

One of the turns of a spiral shell.

【动】(贝壳上的)螺纹；螺环。

Any circular or coiled arrangement of like parts around a central axis.

涡旋。

Anything shaped like a coil.

任何螺旋状之物。

Circular ridge of a fingerprint.

螺形指纹。