The curved body of a bow drawn in three strokes, string unstrung. It is the radical in 张 (to draw open, now the commonest surname in some regions), 强 (strong), 弹 (to shoot, to bounce) and 引 (to pull) — a bow with the string marked as a straight line beside it.
惊弓之鸟 — 'a bird startled by the bow' — describes someone so badly frightened before that the mere sound of a bowstring makes them fall. 左右开弓, drawing the bow with either hand, means doing two things at once, well.
The curved frame of a BOW, waiting for its string.
引 (to pull, to lead) is a bow 弓 with the drawn string beside it — the picture of pulling something toward you.