What does the symbol above mean?
It's a glissando.
I can be notated a few ways.
Execution depends on the instruments. A trombone can do it continuously with the slide. Keyboard, fretted, etc. instruments will have discrete pitches.
The wavy line can also indicate an arpeggio on chords...
...where you sweep quickly through only the tones of the chord.
Watch out for the different meanings.