The phrase "backs salt mines" is often used colloquially to mean "back to work," especially in the context of a tedious or undesirable job. The spelling of this phrase can be confusing, as "backs" is pronounced with a short "a" sound (/bæks/) while "salt" is pronounced with a long "a" sound (/sɔlt/). This discrepancy is due to the English language's irregular spelling rules. However, the phrase's meaning and usage remain widely understood, regardless of its unusual spelling.
"Backs salt mines" is not a defined term or phrase in mainstream English usage, and therefore, there is no dictionary definition available for it. It is possible that you may have encountered an uncommon or regional expression. However, by analyzing the individual words, we can provide some general interpretations.
"Backs" is the plural form of the noun "back," typically referring to the rear surface of something or the part of the body located opposite the chest or stomach. "Backs" can also be used as a verb referring to the act of supporting or endorsing.
A "salt mine" is a subterranean excavation where mineral deposits of salt are extracted. Salt mines can vary in size and are commonly found underground, where layers of salt deposits have accumulated over time.
When used together, "backs salt mines" could potentially mean a supportive or endorsing stance towards salt mines. This could imply expressing favor or support for the extraction of salt from underground deposits. However, without further context or clarification, it is difficult to provide a more precise interpretation.