Definitions for i-beamˈaɪˌbim
Random House Webster's College Dictionary
a rolled or extruded metal beam having a cross section resembling anI.
Category: Building Trades
Origin of I-beam:
girder having a cross section resembling the letter `I'
A beam shaped like a capital letter I (with serifs top and bottom), used in construction.
A cursor shaped like the letter I, usually indicating the presence of editable text.