Hiatus comes from hiare, a Latin verb meaning "to gape" or "to yawn," and first appeared in English in the middle of the 16th century. Originally, the word referred to a gap or opening in something, such as a cave opening in a cliff. In the 18th century, British novelist Laurence Sterne used the word humorously in his novel Tristram Shandy, writing of "the hiatus in Phutatorius's breeches." These days, hiatus is usually used in a temporal sense to refer to a pause or interruption (as in a song), or a period during which an activity is temporarily suspended (such as a hiatus from teaching).