/tɪp/ – noun
Definition: tiền boa cho dịch vụ tốt.
A more thorough explanation: 1. an extra payment given in addition to a required payment, usually to express appreciation for service (US=gratuity)
2. important, non-public information given to an investor about a share
Example: 1. In American restaurants the customary tip is 20%.
2. The allegation is that Smith sold his stock acting on an unlawful tip received from his broker.