Sticky is an adjective
axillary
There is a certain kind of bra that adheres to the skin using a sticky substance. There is no strap on the back, the sides of the bra end underneath you're armpits, which is where the sticky stuff is that keeps it on.
Sticky is an adjective because it describes a noun, like a sticky surface.
It is the stigma.
cuticle
The stigma
No
It varies from tree to tree, but for the most part it is sticky.
Tongue
the answer is anther
the stigma :)