I am more than certain that "obelus" is the correct word here.
Guess The Word

No one has even gotten close, unfortunately. I will reveal the second letter, and I will be make the category more specific:
D A _ _ _ _ _ _ _ _ _ _ _
Category: Invertebrate (no backbone)

Wow, I guess I really stumped the audience here. I will reveal another letter. At this point, I will allow users to guess letters, and I will reveal all locations of that letter, if you would like.
DAD _ _ _ _ _ _ _ _ _ _
Category: It has eight of something.
DADDY LONGLEGS

VernalFire, you are definitely talented when it comes to these puzzles. You are correct.
FlowerBlossom, you definitely do not want any daddy longlegs crawling around at night...

Easy ones are nice and relaxing anyway. I would present my own word for the rest of you to guess, but I want to respect the fact that it is VernalFire's turn.
um
o_ _ _ _ _
Clue: division sign