What is the meaning of -to?

Form of -ytó used after nouns ending in consonants.

Diminutive suffix.

Augmentative suffix.

Forms adverbs from adjectives.

here; used to modify verb direction

Used to give contrastive emphasis to a preceding word.

Used to form ordinal numbers.

Forms the plural of nonpast tenses.

Forms the plural of the recent past tense. (When used alone, forms the plural of the recent past perfective tense when the arguments of the verb are first- or second-person.)

Forms the plural of the distant past tense when at least one of the arguments of the verb is third-person.

Allomorph of -ato (adverb/postposition nominalizing suffix) used after all vowels but e and i.

Rōmaji transcription of と

Forms frequentative verbs from existing verbs. In Latin, this means repeated or intense action. For examples, see here.

second/third-person person singular future active imperative ending

masculine/neuter dative/ablative singular of -tus

Source: wiktionary.org