symbol
/ˈsɪmbl; `sɪmbl/ n
1 ~ (of sth) image, object, etc that suggests or refers to sth else; emblem 象徵; 标志
The cross is the symbol of Christianity. 十字架是基督教的标志.
The lion is the symbol of courage. 狮子是勇武的象徵.
2 ~ (for sth) mark or sign with a particular meaning, eg plus and minus signs in mathematics, punctuation marks, musical notation, etc 符号, 记号（如数学中的加减号、 标点符号、 乐谱等）
On maps, a cross is the symbol for a church. 在地图上, 十字符号代表教堂.
Au is the chemical symbol for gold. ｀Au＇是金的化学元素符号.
algebraic signs and symbols 代数符号.