ˌshow and ˈtell BrE AmE noun [uncountable]
an activity for school children in which they bring an object to school and tell the other children about it:
Ramona brought in a fossil for show and tell.
ˌshow and ˈtell BrE AmE noun [uncountable]
an activity for school children in which they bring an object to school and tell the other children about it:
Ramona brought in a fossil for show and tell.
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012