Plural of boli or bole, or a term used in some traditional contexts for rounded objects or spheres.
Possibly from Latin 'bolus' (rounded mass) or 'bolis' (Greek for throw/cast), though usage is archaic and context-dependent.
In medical terminology, a 'bolus' is a rounded mass of food or medicine you swallow—'bolis' is an ancient plural that reminds us the word originally described anything that moves as a sphere or projectile.
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