casters is a form of:

Caster



noun
1.
(a small container for sugar or salt, with a perforated top for sprinkling from, a small swivelled wheel on the foot of a chairleg, etc) table has casters កង Fishing skillful caster អ្នកបោះសន្ទូច, អ្នកគ្រវែង
  • out caster
    - ដែលត្រូវគេបន្សាត់ចោល
    - ជនដែលគេបន្សាត់ចោល
ENGLISH MEANING
noun
1.
One who casts; as, caster of stones, etc. ; a caster of cannon; a caster of accounts.
2.
A vial, cruet, or other small vessel, used to contain condiments at the table; as, a set of casters.
3.
A stand to hold a set of cruets.
4.
A small wheel on a swivel, on which furniture is supported and moved.