An abbreviation for the chemical trichloranisole, which ruins an enormous amount of wine every year (see corked).
Found on http://www.encyclo.co.uk/local/20433
Shorthand for 2,4,6 trichloroanisole. TCA is the key compound responsible for cork taint in wine. TCA is very potent with many people being able to detect its characteristic mouldy, musty dank like aroma at around 5 parts per trillion. Found on https://www.encyclo.co.uk/local/22313