1
arrowhead
叔父は新しい冒険的事業を始める矢先だ、と言っている。
My uncle says he's about to embark on a new business venture.
2
target of a flying arrow;brunt (of an attack)
3
the very moment (when);the point (of doing)
See also:
矢先に (やさきに)
1
Yasaki