Definition of compasses:
(n) :
A magnetic or electronic device used to determine the cardinal directions (usually magnetic or true north).
(n) :
A pair of compasses (a device used to draw circular arcs and transfer length measurements).
(n) :
(music) The range of notes of a musical instrument or voice.
(n) :
Moderate bounds, limits of truth; moderation; due limits; used with within.
(n) :
(formal) Synonym of scope.
(n) :
(carpentry, architecture, shipbuilding) A curved circular form.