Class write using keyboard (4)
I believe the answer is:
type
I believe this is a triple definition!
'class' is the first definition.
(I've seen this before)
'write' is the second definition.
(typing is a kind of writing)
'using' is a link.
'keyboard' is the third definition.
(thesaurus)
(Other definitions for type that I've seen before include "output, printed" , "Genre" , "key" , "Sort; printed letters" , "Sort, kind" .)