caster

Multiple Entries:
  caster    castor  

Concise Oxford English Dictionary © 2008 Oxford University Press:
caster/ˈkɑːstə(r)/

▶noun

• 1 a person or machine that casts.

• 2 Fishing a fly pupa used as bait.

• 3 variant spelling of castor1.

Concise Oxford English Dictionary © 2008 Oxford University Press:
castor1 /ˈkɑːstə/ (also caster)

▶noun

• 1 each of a set of small swivelling wheels fixed to the legs or base of a heavy piece of furniture.

• 2 a small container with holes in the top, used for sprinkling the contents.

– origin C17: orig. a var. of caster.

Concise Oxford English Dictionary © 2008 Oxford University Press:
castor2 /ˈkɑːstə/

▶noun a reddish-brown oily substance secreted by beavers, used in medicine and perfumes.

– origin ME (in the sense ‘beaver’): from OFr. or L., from Gk kastōr.