Possible Clues:

• XX + X for a stretch to the North
• XX, X will make the North tight
• Intones under stress
• XXX with one on the end for a stretch
• Stretched, uneasy, condition
• To have sent one on like this is enough to have made one tight
• X, X and X and N for a stretch
• Drawing for XX, X, N, perhaps
• XX XN? That's enough to make one tight
• A pulling strain