How Well Do You Know English Slang?
1630s, "to point out," from Medieval Latin punctuatus, past participle of punctuare, from Latin punctus (see point (n.)). Meaning in reference to text, "to have pauses or stops indicated," is from 1818, probably a back-formation from punctuation. Hence, "interrupted at intervals" (1833). Related: Punctuated; punctuating.