Nouns

(n)tota small amount (especially of a drink)“a tot of rum”
(n)toddler, yearling, tot, bambinoa young child who is just beginning to walk

Verbs

(v)total, tot, tot up, sum, sum up, summate, tote up, add, add together, tally, add updetermine the sum of“Add all the people in this town to those of the neighboring town”