Entertainment / Bowling / Polyester: Substance (a plastic) that was very popular in ball surface in the 1970's (among top players), and, still very popular today as either a spare ball or ball of first choice for recreational players. It usually hooks less than a urethane or resin ball, but more than a rubber ball. It normally has a hard shiny surface, not prone to hooking much; it can come in a variety of colors. Used by higher skilled players if the lanes are very dry. See also urethane and resin.
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