rub ‧ ber S3 /ˈrʌbə $ -ər/ BrE AmE noun
1 . [uncountable] a substance used to make tyres, boots etc, which is made from the juice of a tropical tree or artificially:
a rubber ball
2 .
[countable] British English
a) a small piece of rubber or similar material used for removing pencil marks from paper SYN eraser American English
b) an object used for cleaning marks from a ↑ blackboard SYN eraser American English
3 . [countable] American English informal a ↑ condom
4 . rubbers [plural] American English old-fashioned rubber shoes or boots that you wear over ordinary shoes when it rains or snows SYN galoshes
5 . [countable] a series of games of ↑ bridge or ↑ cricket
6 . [countable] the piece of white rubber where the ↑ pitcher (=person who throws the ball) stands in a baseball game