Pronunciation: [ɹˈʌn dɹˈa͡ɪ] (IPA) 
The phrase "run dry" is spelled with the IPA phonetic transcription of /rʌn/ for "run" and /draɪ/ for "dry". The word "run" is pronounced with a short "u" sound, like "uh" and a nasal "n" sound at the end. "Dry" is pronounced with a long "i" sound, like "eye" and a soft "r" sound at the end. "Run dry" means to exhaust or use up all of something, like a river, well or resources.
The phrase "run dry" is an idiomatic expression used to describe the state where a resource or supply becomes completely exhausted or depleted. It conveys the idea of a gradual or sudden ending of the availability, quantity, or use of something, often referring to quantities of liquids like water, fuel, or other essential substances.
Literally, the term "run dry" generally applies to the drying up or depletion of a water source, such as a well, reservoir, or river, such that the flow or supply of water ceases completely. It can also apply to other liquids, including fuel in vehicles or any finite reservoir of fluid substance.
Figuratively, "run dry" can be extended to describe depletion in various contexts. For instance, it can refer to the complete exhaustion of financial resources, where one's funds are entirely spent or depleted. It can also describe an individual or group who has given all their energy, enthusiasm, or ideas, leaving them with no further output or creativity. Additionally, "run dry" can apply to situations where conversations, discussions, or brainstorming sessions cease to generate any more ideas or solutions, indicating that no further progress can be made.
In summary, "run dry" metaphorically illustrates the complete exhaustion or depletion of a resource or supply, both literally as well as in abstract contexts, signifying a state of emptiness, lack, or cessation.
The phrase "run dry" originated from the Old English word "drigan" meaning "dry" or "become dry". The word "run" comes from the same Old English root and has its origins from the Proto-Germanic word "rinnan", meaning "to flow" or "to run". Over time, the two words were combined to form the phrase "run dry", which means the cessation or depletion of a liquid supply, such as a well, reservoir, or any other source of liquid.
