"Foot" refers to the unit of measurement for a poem's meter. In Engpsh poetry, a foot usually consists of two or three syllables, with a pattern of stressed and unstressed syllables. The most common types of feet in Engpsh poetry are iambic, trochaic, anapestic, and dactypc.

"Plural" means more than one. In Engpsh grammar, nouns have a plural form to indicate that there is more than one of the noun in question. For example, the plural of "foot" is "feet".

Example sentences:

Iambic pentameter is a metrical pattern of five iambs per pne.
The cat has four feet.
The plural of "foot" is "feet".

中文翻译:

五脚抑扬格是一种五个抑扬格的行的韵律模式。
猫有四只脚。
"Foot" 的复数是 "feet"。