Definition of blow into

The phrase "blow into" has its roots in the Old English language, where it was spelled as "blæwan upon," meaning "to puff or blow upon." This expression was used to describe the act of blowing air into something, such as a candle wick or a bellows, to ignite a fire or to create wind for blowing out a candle. Over time, the phrase evolved and became more commonly used in various contexts, such as blowing into a horn or a musical instrument to produce sound, blowing into a balloon to inflate it, or blowing into a match to light a fire. The modern usage of "blow into" as a term in forensic science, referring to blowing into a device to provide biological samples for identification, arose in the mid-20th century with the development of breathalyzer technology. In summary, the origin of "blow into" can be traced back to Old English, and its current usage reflects the versatility and adaptability of this simple yet powerful expression as it has evolved over time.