Irony

Part of speech: noun (n.)

1. Dissimulation; ignorance feigned for the purpose of confounding or provoking an antagonist.

2. A sort of humor, ridicule, or light sarcasm, which adopts a mode of speech the meaning of which is contrary to the literal sense of the words.

Part of speech: adjective (a.)

1. Made or consisting of iron; partaking of iron; iron; as, irony chains; irony particles. [R.] Woodward.

2. Resembling iron taste, hardness, or other physical property.