Needle
Down
The zebra mainly eats stiff stems of corns,leaves,and twigs
It is called a scumbler.
awn
Down
In men's formal wear a stiff pleated collar is called a Imperial/Poke collar
Rigor mortis is dead stiff body, not really called posturing.
Membranes do not have a stiff outside. I suspect the answer you are looking for is the cell wall, which is a stiff structure found outside the cell membrane of a plant cell, but separate from it.
Cell wall
nuchal rigidity
yes because it turns stiff
Stiff bristle grass has many common names, including foxtail. That scientific name is Setaria viridis.