smasher

noun

1. (countable, uncountable)Something that, or someone who, smashes.

   “With this mighty resolution framed and glassed, and hung over his bed, along with a pleasing representation of a gleaming eye, bearing the legend, "Thou, God, seest me," he managed by bearing himself humbly among his fellows, or rather, by having humility thrust upon him, to avert for a period such calamity as doth befall the Sunday swimmer, the fruit stealer, the school wagger, the root smoker, the Chinaman pelter, and the window smasher.”

2. (countable, historical, uncountable)Something that, or someone who, smashes.
3. (countable, slang, uncountable)An attractive person (see also smashing).

   “You got engaged on the day that I moved out. It's OK / She's a smasher, perfectly suited to the role”

4. (countable, dated, slang, uncountable)Anything very large or extraordinary; a whopper.
5. (UK, countable, obsolete, slang, uncountable)One who passes counterfeit money.

   “The price of a case (five shillings piece bad) from the smasher is about one shilling; an alderman (two and sixpence) about sixpence; a peg (shilling) about threepence; a downer or sprat (sixpence) about twopence.”

6. (UK, countable, obsolete, slang, uncountable)The counterfeit money itself.