noun
Rare, literary term for a letter, often with a classical or poetic feel. The kanji literally mean 'wild goose's writing', referencing the ancient Chinese legend of a letter tied to a goose's leg.
「雁の文」という言葉は、昔の手紙を指す雅語として使われることがある。
The word 雁の文 is sometimes used as an elegant term for old-fashioned letters.