Thrusting Line
  
The jokes for this one get graphic pretty quick. So just assume we made a pun related to a chorus line of Elvis impersonators and we'll leave it at that.
In the financial world, the term "thrusting line" relates to technical analysis. It's a pattern which suggests that a stock is continuing in its current direction, either up or down.
A stock rises on Monday, finishing at $15.50. On Tuesday, it opens at $16. This situation represents a bullish thrusting line. The stock has opened higher a day after posting gains. It suggests that the bullish trend could continue; the more days you get a higher open, the stronger the thrusting line.
A thrusting line can also move in the other direction. A stock that opens lower (a lower opening than the previous day's close) indicates a bearish thrusting line.