Real Dictionary

paragraph
countable noun: A paragraph is a section of a piece of writing. A paragraph always begins on a new line and contains at least one sentence.

paragraph in American English
a distinct section or subdivision of a chapter, letter, etc., usually dealing with a particular point: it is begun on a new line, often indented
to mention in a paragraph or paragraphs
to write paragraphs, esp. for a newspaper
noun: a distinct portion of written or printed matter dealing with a particular idea, usually beginning with an indentation on a new line
transitive verb: to divide into paragraphs

paragraph in British English
to form into paragraphs
noun: (in a piece of writing) one of a series of subsections each usually devoted to one idea and each usually marked by the beginning of a new line, indentation, increased interlinear space, etc