English Verb exercising present participle and gerund of exercise Noun exercising (plural exercisings) The act by which something is exercised. 2007, Sarah Wilson, Todd & Wilson's Textbook on Trusts, page 376:Whilst this is a duty which cannot be excluded or restricted, and notwithstanding its general policy of promoting the spirit of portfolio in all exercisings of investment power […] Wikiwand - on Seamless Wikipedia browsing. On steroids.