What is the meaning of ?

The hiragana syllable (tsu). Its equivalent in katakana is (tsu). It is the eighteenth syllable in the gojūon order; its position is (ta-gyō u-dan, row ta, section u).

indicates the completion of an action

indicates certainty

indicates affirmation

shows parallel action

genitive or possessive marker

: harbor, port; ferry

: a place name

: a surname

: saliva, spit

Representing a hand handing something over.

Source: wiktionary.org