Fruit also saves mother time (6)
I believe the answer is:
tomato
'fruit' is the definition.
(I've seen this before)
'also saves mother time' is the wordplay.
'also' becomes 'too' ('too' can be a synonym of 'also').
'saves' means one lot of letters goes inside another.
'mother' becomes 'ma' (ma is a kind of mother).
'time' becomes 't'.
'ma'+'t'='mat'
'too' enclosing 'mat' is 'TOMATO'.
(Other definitions for tomato that I've seen before include ""Plum" or "beef" fruit?" , "It's also known as a love apple" , "Fruit used in salads" , "Love apple (or "beef" fruit?)" , "Fruit-vegetable" .)