noy1
/nɔɪ/Now archaic and rare (Scottish and English regional (northern ) in later use)
noun
Annoyance, trouble; suffering, distress, sadness.
Origin
Middle English; earliest use found in Arthour and Merlin. Partly aphetic from annoy, and partly directly from Anglo-Norman nui, nouy, nuye.
noy2
/nɔɪ/Physics
noun
A unit of perceived noisiness.
- One noy is equal to the noisiness of a sound of specified bandwidth and intensity..
Origin
1950s. Shortened from noise.