Weak spots are areas of vulnerability or imperfection in an otherwise strong structure. The term WEAK SPOTS can be broken down into three crossword solutions: SEAMS (5 letters), FLAWS (5 letters), and CHINKS (6 letters). Seams refer to the lines where two pieces of material are joined together, and can be a weak spot if not properly sealed. Flaws are imperfections or errors in a system, and can also be a weak spot. Chinks are small cracks or openings, and can be a weak spot if not properly filled.