n (uncountable) pliable | Pliable material derived from the sap of the rubber tree; a hydrocarbon polymer of isoprene.
n (uncountable|countable) synthetic | Synthetic materials with the same properties as natural rubber.
n (countable) A series of games or contests, especially a match consisting of the best of a series of three games in bridge or whist.
n (sports) A series of an odd number of games or matches of which a majority must be won (thus precluding a tie).