Threepence is a term used to describe a small denomination of a currency. This term is commonly used in the United Kingdom for the equivalent of three old pence. However, there are several synonyms that one can use to refer to threepence, including tuppence-ha'penny, thruppence, and threepenny bit. These terms were used to denote smaller denominations of currencies that were widely used in the past. In the modern-day, the use of such small denominations of currency has become increasingly rare, and people often use electronic payment methods to handle smaller transactions.