Strange wire sent with note (5)
I believe the answer is:
weird
'strange' is the definition.
('weird' can be a synonym of 'strange')
'wire sent with note' is the wordplay.
'sent' indicates an anagram (send can mean to excite or stimulate).
'with' says to put letters next to each other.
'note' becomes 'd' (musical note**).
'wire' anagrammed gives 'weir'.
'weir'+'d'='WEIRD'
(Other definitions for weird that I've seen before include "behaving erratically?" , "Eldritch" , "Strange, peculiar" , "Creepy" , "Quirky" .)