Trace (7)
'trace' is the definition.
(I know that trace can be written as vestige)
This is all the clue.
(Other definitions for vestige that I've seen before include "Trace or shadow of something that once existed" , "Suggestion" , "Small remaining bit of what once was" , "Slight amount, hint" , "'Shadow, trace (7)'" .)
(Other definitions for glimmer that I've seen before include "Gleam faintly, like candle in dark" , "Intimation (of hope?)" , "Faint glow" , "Shine faintly with a wavering light" , "Shine faintly and waveringly" .)
'trace' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for iota that I've seen before include "'Very small amount, jot (4)'" , "Contrivance" , "Jot, particle" , "Greek letter; tiny amount" , "Tiny bit" .)
'trace' is the definition.
(I know that trace can be written as hint)
This is all the clue.
(Other definitions for hint that I've seen before include "Piece of advice" , "Intimate" , "Thin sort of slight indication" , "Indirect clue" , "Tip, clue" .)
(Other definitions for derive that I've seen before include "Issue" , "Infer; originate (from)" , "Originate, come (from)" , "Draw" , "Arise (from); deduce" .)