To come together in one place for a common purpose. The students assembled in the auditorium for the morning assembly.
To fit together the separate component parts of something. He assembled the new furniture according to the instructions provided.
To bring together or compile information or data. The researcher assembled all the data needed for the study.
To bring (people or things) together in one place; to gather or convene. The coach assembled his team on the field before practice.
(Computing) To translate a program written in assembly language into machine code. Before flashing the firmware, the engineer assembled the source code using an ARM toolchain.