Reportedly drew an amphibian (4)
I believe the answer is:
toad
'an amphibian' is the definition.
(toad is a kind of amphibian)
'reportedly drew' is the wordplay.
'reportedly' shows a homophone (sound like).
'drew' becomes 'towed' (towing is a kind of drawing).
'towed' is a homophone of 'TOAD'.
(Other definitions for toad that I've seen before include "not found in Ireland" , "Hateful person; animal" , "Wind in Willows motorist" , "Contemptible person" , "Tailless amphibian" .)