Implements, also pounds and shillings (5)
I believe the answer is:
tools
'implements' is the definition.
(tool is a kind of implement)
'also pounds and shillings' is the wordplay.
'also' becomes 'too' (synonyms).
'pounds' becomes 'L' (L can represent the monetary pound).
'and' means one lot of letters go next to another.
'shillings' becomes 's' (abbreviation e.g. Lsd - pounds, shillings, pence).
'too'+'l'+'s'='TOOLS'
(Other definitions for tools that I've seen before include "Implements used to carry out particular functions" , "Implements used in one's job" , "'A bad workman blames his . . . . .'" , "Hand implements" , "Utensils" .)