(noun)
an instrument that is used for drawing arcs or circles or measuring distances, consisting of two arms that are joined in a hinge, one with a point and the other capable of holding a pen or pencil;
e.g. She used a compass to draw a perfect circle on the page.
(noun)
the scope or range spanned by something, the space enclosed in something, or the boundary that encloses a space and establishes its limit;
e.g. The animals can only roam within the compass of this fence.
(noun)
broadly something that provides direction and/or guidance;
e.g. He followed his inner compass to determine his next course of action.
(verb)
to enclose something or surround it by adopting a circular path/course around it;
e.g. He was the first sailor to compass the world by ship.
(verb)
to accomplish something or attempt to bring it about, or to obtain something and bring it into one's power or possession;
e.g. They were unable to compass their endeavor without causing harm.
(verb)
to absorb something or be able to understand/comprehend it;
e.g. She struggled to compass the changes she would have to make to her plans.
(adjective)
curved, having a curved shape or path;
e.g. The structure is supported by compass beams of steel.