What is the meaning of ト?
lake
puddle of water
breast
nipple
day
The katakana syllable ト (to). Its equivalent in hiragana is と (to). It is the twentieth syllable in the gojūon order; its position is タ行オ段 (ta-gyō o-dan, “row ta, section o”).
sol (musical note)
Source: wiktionary.org