芯子 Traditional form: 芯子 Pinyin (reading): xìnzi Definitions: fuse; wick forked tongue (of a snake) Characters: 芯 - core, pith; the pith of a rush (Juncus effusus) 子 - son, child; seed, egg; fruit; small thing Traditional characters: 芯 - core, pith; the pith of a rush (Juncus effusus) 子 - son, child; seed, egg; fruit; small thing