Jag n. [Written also jagg.]
1. A notch; a cleft; a barb; a ragged or sharp protuberance; a denticulation.
Arethuss arose . . .
From rock and from jag. --Shelley.
Garments thus beset with long jags. --Holland.
2. A part broken off; a fragment.
3. Bot. A cleft or division.
4. A leather bag or wallet; pl., saddlebags. [Scot.]
5. Enough liquor to make a man noticeably drunk; a small “load;” a time or case of drunkeness; -- esp. in phr. To have a jag on, to be drunk. [Slang, U. S. & Dial. Eng.]
Jag bolt, a bolt with a nicked or barbed shank which resists retraction, as when leaded into stone.
Jag, v. t. [imp. & p. p. Jagged p. pr. & vb. n. Jagging ] To cut into notches or teeth like those of a saw; to notch. [Written also jagg.]
Jagging iron, a wheel with a zigzag or jagged edge for cutting cakes or pastry into ornamental figures.
Jag, n. A small load, as of hay or grain in the straw, or of ore. [Prov. Eng. & Colloq. U.S.] [Written also jagg.]