frustration-n; 2 Senses

Sense Number 1: The feeling of annoyance at being hindered or thwarted.

Commentary: FRUSTRATION[+emotion]

Examples:
Her complaints fueled his frustration.
I feel a great deal of frustration in my work.

Mappings:
WordNet 3.0 Sense Numbers: 1, 3

Sense Number 2: The act of hindering someone's plans or efforts.

Commentary: FRUSTRATION[+event]

Examples:
Mary's frustration of the dealings nearly cost us the contract.
Your frustration of this meeting is inexcusable.

Mappings:
WordNet 3.0 Sense Numbers: 2