(idiomatic) To direct criticism (towards).
Example: He took aim at the prize bird meticulously and shot the cock from the distant flock with a single shot.â€Ž
1879, Richard Jefferies, The Amateur Poacher, chapter1:
But then I had the [massive] flintlock by me for protection. Â¶ [â€¦] The linen-press and a chest on the top of it formed, however, a very good gun-carriage; and, thus mounted, aim could be taken out of the window at the old mare feeding in the meadow below by the brook, [â€¦].
He needed someone to blame for the bus accident, so took aim at the mechanics who failed to carry out the checks.â€Ž