Rowed as terms from opera singer enter dictionary (5)
I believe the answer is:
oared
'rowed' is the definition.
(I've seen this before)
'terms from opera singer enter dictionary' is the wordplay.
'terms from opera singer' becomes 'ar' (I can't justify this - if you can you should give a lot more credence to this answer).
'enter' indicates putting letters inside.
'dictionary' becomes 'OED' (Oxford English Dictionary).
'ar' placed into 'oed' is 'OARED'.
'as' acts as a link.
Can you help me to learn more?
(Other definitions for oared that I've seen before include "Provided with motive power" , "Adore (anag.)" , "Rowed" , "ready for a row" , "Like a rowing eight" .)