Here's how you can sign it:
1. Sign "SKATE": This is a common sign, made by moving your dominant hand in a circular motion while your other hand is flat and palm-down.
2. Sign "BOARD": This is a simple sign, made by holding your dominant hand flat and moving it back and forth horizontally.
You would then combine these signs together, as if you were saying "skate board," to represent "skateboard."
Here are some additional options for signing "skateboard":
* Use a mimetic sign: You could mimic the action of skateboarding by using your hands to imitate the motion of pushing off the ground and moving on a board.
* Use fingerspelling: You could spell out the word "S-K-A-T-E-B-O-A-R-D" with your fingers.
The best way to sign "skateboard" will depend on the context and the individual signer's preferences.