Definition of "weak spot" [weak spot]

• A place of especial vulnerability (noun)

WordNet. Princeton University. 2010.

• "As Terz walked toward his knapsack, Lizbeth tugged at the net, hoping to discover a weak spot or to wear the beast down."
• "For self-improvement I had brought along with me a paperback copy of Antonia Fraser's Cromwell, Our Chief of Men, English history being a weak spot in my armoury, which I was endeavouring to repair under the gracious guidance of Mr. Anderson, himself a keen student of our island story."
• "But, as it happened, the PATRON had just one weak spot — that he was interested in LE SPORT, and was ready to talk if you approached him on this subject."