Learner needing two wheels for convenience? (3)
I believe the answer is:
loo
'convenience?' is the definition.
(both can mean a toilet)
'learner needing two wheels' is the wordplay.
'learner' becomes 'l' (as in a learner driver with L-plates on their car).
'needing' says to put letters next to each other.
'two wheels' becomes 'OO' (O looks like a wheel).
'l'+'oo'='LOO'
'for' acts as a link.
(Other definitions for loo that I've seen before include "A colloquial toilet" , "Lavatory - old card game" , "WC - old card game" , "Little boys' room" , "The little room - card game" .)