compass

1. A magnetic or electronic device used to determine the cardinal directions (usually magnetic or true north).
2. A pair of compasses (a device used to draw an arc or circle).
3. The range of notes of a musical instrument or voice.
4. A space within limits; an area.
5. An enclosing limit; a boundary, a circumference.

   within the compass of an encircling wall

6. Moderate bounds, limits of truth; moderation; due limits; used with within.
7. Scope.
8. A passing round; circuit; circuitous course.

1. To surround; to encircle; to environ; to stretch round.
2. To go about or round entirely; to traverse.
3. To accomplish; to reach; to achieve; to obtain.
4. To plot; to scheme (against someone).

adverb

In a circuit; round about.