WordNet
olfactory bulb
n. one of two enlargements at the terminus of the olfactory nerve at the base of the brain just above the nasal cavities
Wikipedia
Olfactory bulb
The olfactory bulb (bulbus olfactorius) is a neural structure of the vertebrate forebrain involved in olfaction, or the sense of smell.
Usage examples of "olfactory bulb".
It will shut down the olfactory bulb in your brain for approximately an hour.
It would be ridiculous to code for a tiny Gliksin nose and a giant Barast olfactory bulb.