Does glaucous start with the sound in lost or in law?
vowel-digraphThe au of glaucous is a Latin pair of letters standing for a single English sound. Nothing in that sound points back to either letter.
heard asglocous
spelledglaucous
saidGLAW-kus
Either, depending on where you live. It is spelled glaucous.
For a great many English speakers the vowels of cot and caught are the same, so glaucous and a word spelled glocous would be exact homophones. That makes the o a completely faithful transcription of what is being said, and no help at all in getting to the spelling, which is fixed by the Latin au.
The other five