flaw-n; 3 Senses

Sense Number 1: a defect or mar in an object, artifact, form

Commentary: FLAW[+entity][+form][+defect]

The jeweler showed them several diamonds with very small flaws.
Dinnerware with minor flaws is sold at several factory outlets.
A small scar on her chin was the only flaw on the woman's face.
These weavers intentionally weave a small flaw into their rugs, as a sign of humility.
This drunk driving charge is a flaw on John's record. (figurative extension - note: it's a flaw on a record, not an inherent quality of John)

WordNet 3.0 Sense Numbers: 1

Sense Number 2: a personality shortcoming

Commentary: FLAW[+quality][+inherent][+personality][+shortcoming]

The gangster's vanity turned out to be his fatal flaw.
Pride was the hero's tragic flaw in the play.
She has her flaws but she is still a good teacher.

WordNet 3.0 Sense Numbers: 2

Sense Number 3: inconsistency in a theory or line of reasoning

Commentary: FLAW[+quality][-consistency][+form][+logical]

He pointed out several flaws in the proposed theory of intelligent design.
It's a serious flaw in the novel's plot. (something illogical or unbelievable)
See if you can find a flaw in my argument.

WordNet 0.0 Sense Numbers: 1b