deposit/ dɪ'pɔzɪt /

1.noun [c] 
(money) (in account) 储蓄

2.noun
(on goods) 保证金

3.noun
(on house,bottle,when hiring) 押金

4.noun
(residue) (from chemical process) 沉淀物

5.noun [of ore] [ oil] [ minerals etc] 
沉积

6.vt.[+money] 
把…存入…

7.vt.
(put,leave) 寄存

8.vt.
(from chemical or geological process) 沉积

to put down a deposit of 50 pounds
支付50英镑的保证金