Device no writer put in line (3,6)
I believe the answer is:
tin opener
'device' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe there's a link between them I don't understand?
'no writer put in line' is the wordplay.
'writer' becomes 'pen' (I've seen this before).
'put in' means one lot of letters goes inside another.
'line' becomes 'tier' (tier is a kind of line**).
'no'+'pen'='nopen'
'nopen' put into 'tier' is 'TIN-OPENER'.
Can you help me to learn more?
(Other definitions for tin opener that I've seen before include "chef's helper?" , "help to get at provisions" , "Kitchen implement" , "something useful in the kitchen?" , "What you want in kitchen" .)