Definitions:
shaped like a circle or cylinder

shaped like a sphere

(of a voice) rich and mellow; not harsh

(of a number) expressed in convenient units rather than exactly, for example to the nearest whole number or multiple of ten

not omitting or disguising anything; frank

a circular piece of something

an act of visiting a number of people or places in turn

each of a sequence of sessions in a process, typically characterized by development between one session and another

a regularly recurring sequence of activities

a song for three or more unaccompanied voices or parts, each singing the same theme but starting one after another, at the same pitch or in octaves; a simple canon.

a slice of bread

the amount of ammunition needed to fire one shot

so as to rotate or cause rotation; with circular motion

so as to rotate and face in the opposite directio