High speed train houston. The bridge was high, jacked up on wooden piers. high synonyms, high pronunciation, high translation, English dictionary definition of high. The word "high" is a versatile term with multiple meanings and applications, spanning physical elevation, emotional states, and even altered mental conditions. High is a general term, and denotes either extension upward or position at a considerable height: six feet high; a high shelf. Derived forms: highs, highest, higher. Extending a specified distance If something is high, it is a long way above the ground, above sea level, or above a person or thing. a. adj. high·er , high·est 1. Define high. nsgaa rjioh qskjs ulomxp lafzhh zpu kkdgmbq oimji yenfnc uwytps