Term
Net
The net that divides the court in the middle. It is 34 inches (86.4 cm) high at the center.
The net stretched across the middle of the court (Section 1, 3.B). It is 34 inches (86.4 cm) high at the center and 36 inches (91.4 cm) high at the sidelines (3.B.6, 3.B.7).
During play, if your body, your paddle, or anything else you are wearing or holding touches the net, it is a fault (13.G, 13.G.1, Touching the net during play is a fault). If a serve touches the net, play goes on as long as it lands in the correct service court (7.E, Serve diagonally).
See it in a figure
This figure is from the rule "Court size and lines".
How to read the sources: numbers like (8.F.4) are rulebook sections, and links are outside sources. An "Author's note" is the author's personal experience, not an official rule.