A low-level language is a programming language that deals with a computer's hardware components and constraints. It has no (or only a minute level of) abstraction in reference to a computer and works to manage a computer's operational semantics.
A low-level language may also be referred to as a computer’s native language.
Low-level languages are designed to operate and handle the entire hardware and instructions set architecture of a computer directly.
Low-level languages are considered to be closer to computers. In other words, their prime function is to operate, manage and manipulate the computing hardware and components. Programs and applications written in a low-level language are directly executable on the computing hardware without any interpretation or translation.
Machine language and assembly language are popular examples of low-level languages.