To cut back is to reduce the amount of something. Cut back on spending, cut back the hours, cut back the roses.
It takes on before what is being reduced. In gardening it is literal, since a plant is cut back in autumn so it grows better in spring.
1phrasecut backTo reduce the amount of something.
“They had to cut back on staff before Christmas.”
cut back is a phrase.
Practised in Phrasal Verbs