The term used to refer to the combination of ascii characters of a space, then a dash, then a space. This combines the word 'space' (referring to the ascii character space) and 'dash' referring to a '-'
Written " - "
This character combination is frequently used to separate two ideas or phrases that are in common for instance a Title and an Author or a Name and a Position.
An example is
Title of a Book - Author Name. The 'spash' is the " - " (space, dash, space) between the two ideas.
Use a spash to separate those statements.
Write it, 'the title of the book, "spash", author.'
Using a spash to separate ideas is easier than saying space-dash-space when referring to " - "