tot

(noun) a small amount (especially of a drink). Example: "A tot of rum."

(noun) a young child. Synonyms: toddler, yearling, bambino.

(verb) determine the sum of. Synonyms: total, tot up, sum, sum up, summate, tote up, add, add together, tally, add up. Example: "Add all the people in this town to those of the neighboring town."