insert
/in-ˈsərt/
verb
to put or thrust in
to put or introduce into the body of something : interpolate
to set in and make fast; especially : to insert by sewing between two cut edges
insert the key in the lock
introduce insert insinuate interpolate intercalate interpose interject mean to put between or among others. introduce is a general term for bringing or placing a thing or person into a group or body already in existence. insert implies putting into a fixed or open space between or among.
noun
something that is inserted; especially : written or printed material inserted (as between the leaves of a book)