the last word in something

the last word in (something)

The most modern or advanced version of something. It may not look like much, but I can assure you that this machine is the last word in neural imaging. They claim to be designing the last word in drone technology.See also: last, word

the last word in something

If you say that something is the last word in luxury, comfort, or some other quality, you mean that it has a great deal of this quality. The spa is the last word in luxury and efficiency.See also: last, something, word