Definition of: perform

(pər·fôrm′) v.t.
1. To carry out in action; execute; do: to perform an operation.
2. To act in accord with the requirements or obligations of; fulfil; discharge, as a duty or command.
3. To act (a part) or give a performance of (a play, piece of music, etc.).
—v.i.
4. To carry through to completion an action, undertaking, etc.
5. To give an exhibition or performance, as of a role in a play, singing, etc.: The actress will perform tomorrow. See synonyms under ACCOMPLISH, EFFECT, EXECUTE, MAKE, TRANSACT. [<AF parfourmer, OF parfournir accomplish entirely <par- thoroughly (<L per-) + fournir accomplish; infl. in form by OF former form]
—per·form′·a·ble adjective