In crypto and legacy trading speak, TA refers to technical analysis.
Joke names for technical analysis
Crypto traders have invented several joke names for technical analysis, trying to make the point that technical patterns are a fallacy and that lines on chart are completely arbitrary.
There is a larger debate on whether technical analysis in crypto can actually work, which is not a bad question.
Some of the most common joke names for technical analysis are t1ts and a$$ (TA), astrology or tea leaves.
Best tools for Technical Analysis in crypto
TradingView is a popular technical analysis app where legacy and crypto traders share ideas, trading strategies or just mind their own charts.