The meaning of 'Kutuzov'

An excerpt from a conversation with Lubov Alexcyeyevna Kutuzov, my babushka.

PK: What does our last name mean?

(pause)

LK: I think, how do you say, 'booze bus'.

PK: What do you mean? It's like a breathe tester? *confused*

LK: It is where you lock people up. Not for being charged or going to prison but just for when they've had too much vodka.

PK: Oh, so like the watch-house?

LK: I guess so.