i Register
In some senses, tot is marked as obsolete, UK, historical. Watch for register when choosing this word.
noun
A small child.
He learned to run when he was just a tot.
When I was but a tiny tot, I knocked the neighbors cold / For I became to walk when I was scarcely one year old
A small amount of liquor, (particularly) a small measure of rum.
Then I give them a tot of rum apiece, as they sit huddled in their blankets.
And tot of rum to send him warm to sleep.
Ellipsis of tater tot.
A small cup, usually made of tin.
A foolish fellow.
Whoe answeared like a toute, or a maddman, as he was, that he was for the Kinge.
verb
To sum or total.
There are, of course, many ways to proceed from here, the most likely being that you, as an experienced tradesman, would simply know what these amounts come to (in terms of groups of ten) and can tot them up in your head.
To mark (a debt) with the word tot (Latin for "so much"), indicating that it was good or collectible for the amount specified.
a totted debt
noun
A total, an addition of a long column of figures.