Definition of low adjective in oxford advanced learners dictionary. From middle english, from old english hlōg, preterite of hliehhan (“to laugh ). Not high or tall: Near the ground, not high: Low ·er , low ·est 1. Having little relative height; The meaning of low is having a small upward extension or elevation. A low fence that he could jump over easily. Synonym discussion of low. Rising only slightly above surrounding surfaces: Situated, placed, or occurring not far above the ground, floor, or base. Obsolete by the 19th century, survives in toponymy as - low. Below the usual level: Of small extent upward: Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. How to use low in a sentence. A low shelf that the baby could reach. See examples of low used in a sentence. Low synonyms, low pronunciation, low translation, english dictionary definition of low. Situated, placed, or occurring not far above the ground, floor, or base: