Small lake in view (6)
I believe the answer is:
slight
'small' is the definition.
(I've seen this before)
'lake in view' is the wordplay.
'lake' becomes 'l'.
'in' indicates putting letters inside.
'view' becomes 'sight' (synonyms).
'l' placed inside 'sight' is 'SLIGHT'.
(Other definitions for slight that I've seen before include "Flimsy, tenuous" , "Trifling - snub" , "Slim or tenuous" , "Minor - insult" , "Insult, affront" .)