Be enraged about brief attempt to obtain gardening implement (8)
I believe the answer is:
strimmer
'gardening implement' is the definition.
(I've seen this before)
'be enraged about brief attempt' is the wordplay.
'be enraged' becomes 'simmer' (to simmer is to be very angry).
'about' indicates putting letters inside.
'brief' means to remove the last letter.
'attempt' becomes 'try' (synonyms).
'try' with its last letter taken off is 'tr'.
'simmer' placed around 'tr' is 'STRIMMER'.
'to obtain' acts as a link.
(Other definitions for strimmer that I've seen before include "Machine for cutting grass edges" , "Hand-held grass cutter" , "Brush cutter" , "Garden equipment" , "Cutter for rough grass etc" .)