hold ‧ o ‧ ver /ˈhəʊldˌəʊvə $ ˈhoʊldˌoʊvər/ BrE AmE noun [countable] American English
an action, feeling, or idea that has continued from the past into the present SYN hangover
holdover from
Her fear of dogs is a holdover from her childhood.
⇨ hold over at ↑ hold 1