橡胶 Traditional form: 橡膠 Pinyin (reading): xiàngjiāo Definitions: rubber caoutchouc Characters: 橡 - chestnut oak; rubber tree; rubber 胶 - glue, gum, resin, rubber; sticky; to glue Traditional characters: 橡 - chestnut oak; rubber tree; rubber 膠 - glue, gum, resin, rubber; sticky; to glue