It's both the past tense and the past participle of the verb "to bore."
Examples:
* Past Tense: He bored me with his long story.
* Past Participle: I was bored by the lecture.
It's both the past tense and the past participle of the verb "to bore."
Examples:
* Past Tense: He bored me with his long story.
* Past Participle: I was bored by the lecture.