Trying Morse code finally, struggling with it (8)
I believe the answer is:
tiresome
'trying' is the definition.
(I've seen this before)
'morse code finally struggling with it' is the wordplay.
'finally' says to take the final letters.
'struggling with' indicates anagramming the letters (the letters struggle or wriggle into a new form).
The final letter of 'code' is 'e'.
'morse'+'e'='morsee'
'morsee' mixed up with 'it' makes 'TIRESOME'.
(Other definitions for tiresome that I've seen before include "Like a pain" , "Meteors I find annoying" , "Fatiguing; boring" , "Causing impatience" , "Is remote, being boring" .)