assembler

noun

1. (countable)A program that reads source code written in assembly language and produces executable machine code, possibly together with information needed by linkers, debuggers and other tools.

   “The system includes an 8080 and a Z80 assembler, a Tektronix format downloader and other utilities.”

2. (informal, uncountable)Assembly language.

   “I wrote that program in assembler.”

3. (countable)One who assembles items.

   “Our father worked as an assembler in a radio factory that would go out of business in the early 1960s, […]”

4. (countable)A nanodevice capable of assembling nanodevices, possibly including copies of itself, according to a plan.

   “Assembler (nanotechnology) on Wikipedia.Wikipedia”