Webster’s Revised Unabridged Dictionary · 1913
Practicer
Prac′ti·cer (·tĭ·sẽr), n. [Often written practiser.] 1. One who practices, or puts in practice; one who customarily performs certain acts. South.
2. One who exercises a profession; a practitioner.
3. One who uses art or stratagem. [Obs.] B. Jonson.