The phrase "monthly webinars" refers to online seminars or presentations that occur once a month. These are interactive events conducted over the internet, allowing participants to learn, ask questions, and discuss relevant topics. Full definition
For example, we hold monthly webinars for teachers and our next one is on special education and digital technologies. (educationmattersmag.com.au)
Most recently, he has been hosting monthly webinars so that his state's principal association members can connect and share innovative ideas for growing in school leadership. (coolcatteacher.com)