'To train a gun' definitions:

Definition of 'To train a gun'

From: GCIDE

Train \Train\, v. t. [imp. & p. p. Trained; p. pr. & vb. n. Training.] [OF. trahiner, tra["i]ner,F. tra[^i]ner, LL. trahinare, trainare, fr. L. trahere to draw. See Trail.] [1913 Webster]
1. To draw along; to trail; to drag. [1913 Webster]
In hollow cube Training his devilish enginery. --Milton. [1913 Webster]
2. To draw by persuasion, artifice, or the like; to attract by stratagem; to entice; to allure. [Obs.] [1913 Webster]
If but a dozen French Were there in arms, they would be as a call To train ten thousand English to their side. --Shak. [1913 Webster]
O, train me not, sweet mermaid, with thy note. --Shak. [1913 Webster]
This feast, I'll gage my life, Is but a plot to train you to your ruin. --Ford. [1913 Webster]
3. To teach and form by practice; to educate; to exercise; to discipline; as, to train the militia to the manual exercise; to train soldiers to the use of arms. [1913 Webster]
Our trained bands, which are the trustiest and most proper strength of a free nation. --Milton. [1913 Webster]
The warrior horse here bred he's taught to train. --Dryden. [1913 Webster]
4. To break, tame, and accustom to draw, as oxen. [1913 Webster]
5. (Hort.) To lead or direct, and form to a wall or espalier; to form to a proper shape, by bending, lopping, or pruning; as, to train young trees. [1913 Webster]
He trained the young branches to the right hand or to the left. --Jeffrey. [1913 Webster]
6. (Mining) To trace, as a lode or any mineral appearance, to its head. [1913 Webster]
To train a gun (Mil. & Naut.), to point it at some object either forward or else abaft the beam, that is, not directly on the side. --Totten.
To train, or To train up, to educate; to teach; to form by instruction or practice; to bring up. [1913 Webster]
Train up a child in the way he should go; and when he is old, he will not depart from it. --Prov. xxii. 6. [1913 Webster]
The first Christians were, by great hardships, trained up for glory. --Tillotson. [1913 Webster]