Definition of blackthorn winter in English:
A spell of cold weather at the time in early spring when the blackthorn flowers.
- A harsh winter was called blackthorn winter indicating associations with strength against adversity.
- The blackthorn winter of that particular April was like a metaphor for her whole life: for the end of glamour, financial security and marriage.
- The white flowers occur before the leaves in what is invariably a bad spell of weather (blackthorn winter).