1.
just the other day; only recently; not long ago
An emphatic way of saying 'the other day,' stressing that the event happened very recently — typically within the last few days or weeks.
つい adds emphasis to 先日 (the other day), making it feel more immediate — 'just' the other day. The つい here conveys the sense of 'only just' or 'so recently that it still feels fresh.'