An end-stop occurs when a line of poetry ends with a period or
definite punctuation mark, such as a colon. When lines are end-
stopped, each line is its own phrase or unit of syntax. So when
you read an end-stopped line, you'll naturally pause. In that
sense, it's the opposite of enjambment, which will encourage you
to move right along to the next line without pausing. Bright
Star, would I were as stedfast as thou art— Not in lone splendor
hung aloft the night, And watching, with eternal lids apart,
Like nature's patient, sleepless Eremite, See how the lines each
have their own units of sense? And they each end in a
punctuation mark that indicates a pause. These, Shmoopers, are
end-stopped lines. In fact, "Bright Star" is mostly end-stopped,
with only two examples of enjambment. Check out the poem, and
see if you can find them.