by Colin McIntosh
One of the ways in which language is constantly changing is by adding new meanings to existing words. Sometimes the new meaning is clearly based on the old meaning, as is the case with a computer mouse, or a dropdown menu, or an ice cream cone, but other times the relationship between the old and new meanings is less clear, or even non-existent. There is no connection, historically speaking, between nan, a British word for grandmother, and nan (also naan), a type of flat bread in South Asian cooking. The same can be said of rock (meaning ‘stone’) and rock music. They simply happen to have the same combination of sounds and letters, with very different origins.
The oldest meaning of pod, for example, is the one that refers to a part of a plant, usually long and thin, that contains the seeds. Some vegetable pods can be eaten, such as those of green beans (also called French beans and string beans); others, such as peas, contain the edible part, and are usually not eaten themselves. This meaning itself comes from an Old English word meaning ‘cloak’, so it is possible to see a connection between the two meanings – they both refer to protective coverings. Read the rest of this entry ?