Obelisk
Part of speech: noun
Definition: A tall, square, tapered, stone monolith topped with a pyramidal point, frequently used as a monument. The dagger sign (†), especially when used as a reference mark.
Dagger
Part of speech: noun
Definition: A stabbing weapon, similar to a sword but with a short, double-edged blade.A text character (†) that is used for footnotes, to signify death, and to express the mathematical application of Hermitian conjugacy.
Example sentence: In 2007 the 'dagger' of an idea that killed President Bush's effort at reforming the immigration system was lax border security.