The spelling of the word "estey" may seem confusing at first glance, but it can be explained using the International Phonetic Alphabet (IPA). The correct pronunciation of "estey" is /ɛsti/ with the stress on the first syllable. The "e" is pronounced as the short "e" sound, while the "s" makes the usual "s" sound. The "t" is pronounced as a hard "t" sound, and the "ey" is pronounced as the "ee" sound. So, the proper spelling for this word is "estey."
There is no widely recognized definition for the term "estey" in the English language. If the word you mentioned pertains to a specific name or entity, such as Estey Organ Company, then it would be appropriate to provide a definition related to that. However, if "estey" is being used in a different context or has a different significance, a dictionary definition might not be available or applicable.
In situations like this, it is recommended to provide additional information or context to help better understand the intended meaning of the word.