long talk; lengthy speech
Used for a single, extended talk or lecture, often with a slightly formal or literary feel. Commonly appears in set phrases like 長講一席ぶつ.
He delivered a long speech at the meeting.
長話 is a more casual, everyday word for a long chat or talk, while 長講一席 is more formal and often implies a structured lecture or discourse.
Compound of 長講 (long lecture) and 一席 (one seat/occasion), literally 'one session of a long lecture'. The exact historical derivation is uncertain.