Other forms: logogriphs
A logogriph is a kind of word puzzle that was quite popular in the 18th and 19th centuries. The challenge is to solve a riddle by finding a hidden word or words within another, usually longer one.
The simplest form of a logogriph is a game where you try to make as many words as possible out of the letters of another, usually longer word. How many words can you make using the letters in logogriph? I see logo, graph, gogo, grip, girl, polio, etc. Historically, however, a logogriph was more complicated. It was often written as a series of riddles in verse, where each stanza provided a clue to a different word made from a master word's letters. If the master word were MASTER, for example, the verse clues might lead you to mast, steam, and tamer, before finally revealing the word star.