The correct spelling of the word "Rainford" is /ˈreɪnfərd/. In IPA phonetic transcription, the first syllable is pronounced as the diphthong /eɪ/, similar to the way "ai" is pronounced in "rain". The second syllable is pronounced as /fərd/, with a silent "n" in the middle. The pronunciation is similar to the word "Ford", but with an "f" sound instead of a "v" sound. Overall, the spelling and pronunciation of "Rainford" adhere to English language rules and conventions.
The word "Rainford" is a place-name, originating from England. Its etymology is believed to come from the Old English words "regen" meaning "rain" and "ford" meaning "a shallow place in a river or stream where it is safe to cross". Therefore, "Rainford" can be understood to refer to a location where there is a safe crossing point in a rainwater stream or river.