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a British coin in use until 1971, worth half a penny. There were 480 halfpennies in a pound. 半便士硬币（1971 年前使用的英国硬币，480 半便士硬币为一英镑） -
a British coin in use between 1971 and 1984, worth half a penny. There were 200 halfpennies in a pound. 半便士硬币（1971 至 1984 年间使用的英国硬币，200 半便士硬币为一英镑）
Idioms
spoil the ship for a ha’p’orth/ha’pennyworth of tar
- (saying)
to cause something good to fail because you did not spend a small but necessary amount of money or time on a small but essential part of it 因小失大