Keywords: lesson, period (lesson)
Sign Definition
As a Noun
                                            1.  A short period of time during which people are taught about a particular subject or taught how to do something. English = lesson
                                          
                                          
                                        
                                            2.  At a school or college, the parts the day is divided into during which lessons are given. English = period.
                                          
                                          
                                         
                  
                      