Matsu ware wa aware yaso ni narinuru o Abukumagawa no tōzakarinuru - Kinyo Wakashu(English Translation & Meaning)

まつ我はあはれ八十になりぬるを
あぶくま川の遠ざかりぬる

Roma-ji: Matsu ware wa aware yaso ni narinuru o Abukumagawa no tōzakarinuru
English Translation: I who wait like pine,
alas, have now reached the age
of eighty years, yet
like Abukuma River,
meeting has drawn farther off
Meaning: I, who have waited like the pine, alas, have reached eighty years, yet like the Abukuma River, the chance of meeting you has only drifted farther away.
Commentary: Book Nine Miscellaneous Poems I 581

The poet, who has kept on waiting, has reached eighty years, alas, yet like the name of the Abukuma River the chance of meeting has only drawn farther off. The grief of one grown old after years of waiting who still cannot meet, and sees the chance recede ever farther, is expressed by joining au, to meet, to the Abukuma River, a famous place in Michinoku.
Matsu seems to echo both matsu, to wait, and the pine, a symbol of long life.

First line, 'matsu ware wa', is a pivot in which matsu means both waiting and the long-lived pine, left in kana.
Second line, 'aware yaso ni', means alas, to eighty, the interjection aware expressing grief.
Third line, 'narinuru o', means though I have become, the attributive of the perfective nu followed by the concessive o.
Fourth line, 'Abukumagawa no', means of the Abukuma River, a famous place in Michinoku, with au joining the sense of meeting, left in kana.
Final line, 'tōzakarinuru', means it has drawn far away, closing with lingering feeling on the attributive of the perfective nu. It repeats the nuru of narinuru in the third line.
Source: Kinyo Wakashu
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