a surname / a former city, now part of Tokyo

sharp drop; plunge; nosedive; slump; (value or amount) plummeting

(archaic) an honorific term for a deity or person

The hiragana syllable と (to). Its equivalent in katakana is ト (to). It is the twentieth syllable in the gojūon order; its position is た行お段 (ta-gyō o-dan, “row ta, section o”).