An honorific plural for teachers (or other professionals like doctors, lawyers); a respectful way to address or refer to multiple instructors or specialists.
今日のセミナーには大学の先生方が多数参加した。
Many university professors participated in today's seminar.
先生方、お忙しいところお集まりいただきありがとうございます。
Teachers (or esteemed guests), thank you for gathering despite your busy schedules.
医学部の先生方に新しい治療法について意見を伺った。
I asked the medical faculty members for their opinions on the new treatment method.