Today I’m going to give you a glimpse into what lexicographers do. (They’re the professionals who add, delete, and edit dictionary definitions.)

One recent Saturday morning before the Russian invasion of Ukraine, I heard a startling remark during an MSNBC conversation between host Ali Velshi and journalist Erin Laughlin. Laughlin was saying that “So far, not a single Russian troop has been seen.”

I heard English change, right there on my TV. For some years now the word troop has been acquiring a new meaning and usage. I’m sure that lexicographers were very interested in that MSNBC broadcast!

Here’s what I mean. When I was growing up, troop always referred to a group of soldiers or Girl Scouts or Boy Scouts. I belonged to Girl Scout Troop 4 in Bethpage, New York. Sometimes several troops would get together for an activity. Five troops might include 50 or 60 Girl Scouts.

Nowadays, though, troops means “soldiers.” For example, here’s an excerpt from the December 15 New York Times. The subject is the American military withdrawal from Iraq:

Although Thursday’s ceremony represented the official end of the war, the military still has two bases in Iraq and roughly 4,000 troops, including several hundred who attended the ceremony. At the height of the war in 2007, there were 505 bases and more than 170,000 troops.

That 170,000 troops means 170,000 soldiers.

What’s so exciting (or disturbing, depending on your point of view) is that Erin Laughlin used troop as a singular word to mean “one soldier”: “not a single Russian troop has been seen.” That’s new! I haven’t heard anyone else use “one troop” that way. (Back in 1955, we would have thought she meant “not a single Russian military unit has been seen.”)

I can guarantee that Erin Laughlin’s remark was recorded and noted in a vocabulary log. If many more people start using troop that way, eventually we’ll get a new dictionary entry.

And that, folks, is how dictionaries are updated.