I appreciate that time's needed with Arabic language (5)
I believe the answer is:
tatar
'language' is the definition.
(Tatar is an example)
'i appreciate that time's needed with arabic' is the wordplay.
'i appreciate that' becomes 'ta' (informal way of saying thank you).
'time' becomes 't' (abbreviation).
'needed with' says to put letters next to each other.
'arabic' becomes 'Ar.' (abbreviation in Chambers).
'ta'+'t'+'ar'='TATAR'
(Other definitions for tatar that I've seen before include "Old warrior" , "Russian" , "Member of a people living in Ukraine and Russia" , "Turkic language" , "Mongol warrior" .)