Superimpose

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Overstrike \O`ver*strike"\, v. t. To strike beyond. [Obs.]

Wiktionary Word definitions in Wiktionary
n. 1 (context numismatics English) A coin that has been overstruck, i.e. coined more than once. (from 20th c.) 2 (context typography English) The printing of one character over another, as ''-'' on top of ''L'' to produce ''Ł''. (from 20th c.) 3 (context ...

Wikipedia Word definitions in Wikipedia
In typography , overstrike is a method of printing characters that are missing from the printer 's character set . The character was created by placing one character on another one — for example, overstriking " L " with " - " resulted in printing a " Ł ...