Such songs have power to quiet the restless pulse of care
It can mean eroded, worn out, or crumbling.
(Basically it's saying that the barn is falling apart because it's so old and destroyed from weather.)
My Spanish teacher <u>who wears flowers in her hair</u> is very pretty . The underlined pattern is the adjective clause. It is a clause because it is a sentence; it has got a subject : <em>who</em>, and a predicate: <em>wears flowers in her hair. </em>This clause works as an adjective because it qualifies the subject of the main sentence : <em>My Spanish teacher</em>. The adjective clause gives some specific information about the Spanish teacher.
Using force or trying to persuade someone through sarcasm or irony could be viewed as one of the worst ways to persuade someone into believing something you want to prove.