The amphibrach is a foot of three syllables, the first and third short, and the second long.
Similarly, such a word as alighted, in which a strong syllable is situated between two weak ones, may be called an 'amphibrach.'
But these lines are of the high burlesque kind, and in this stile the amphibrach closes lines with great beauty.
The amphibrach plays a highly important part in English verse, though it is usual not to mention it at all.
Similarly, the symbol means a trochee; and the symbol means an amphibrach.
Again, I should say, anapaestic—but this anapaest and amphibrach quarrel is ἄσπονδος.