The correct spelling of the word "reagins" is actually "regains." The IPA phonetic transcription for "regains" is /rɪˈɡeɪnz/. This word is pronounced with a short "i" sound followed by a hard "g" sound, and the stress falls on the second syllable. The word means to recover something that was lost or to obtain something after losing it. It's important to pay attention to spelling to accurately convey the intended meaning of a word.
I apologize, but I couldn't find any information about a term or word called "reagins". It's possible that you have misspelled the word or the term is quite specific and not widely known. Could you kindly provide more context or clarify the term?