sinus
nounStress: first syllable
Syllables: si-nus (2)
English Definition
A cavity within a bone or other tissue, especially one in the bones of the face or skull.
Example Sentence
He had a severe headache due to a sinus infection.
US IPA
/ˈsaɪnəs/
UK IPA
/ˈsaɪnəs/