It's not surprisingly jelly-like (3)
I believe the answer is:
gel
If this is the answer, I'm afraid I cannot explain it.
Can you help me to learn more?
(Other definitions for gel that I've seen before include "Posh female" , "Set, become firmer" , "Jelly-like substance for leg" , "Preparation used in setting hair" , "Thicken" .)