you (pron) — sense 3 The person spoken to or written to, as an object. (Replacing thee; originally as a mark of respect.)
your (det) — sense 3 A determiner that conveys familiarity and mutual knowledge of the modified noun.
yourself (pron) — sense 2 You (singular); used emphatically, especially to indicate exclusiveness of the referent's participation in the predicate, i.e., that no one else is…
yourself (pron) — sense 3 You (singular); even when "you" has not been used previously; see usage notes.
yours (pron) — sense 1 That or those belonging to you; the possessive second-person singular pronoun used without a following noun.
youth (noun) — sense 2 The part of life following childhood; the period of existence preceding maturity or age; the whole early part of life, from childhood, or, sometimes…
you (verb) — sense 7 To address (a person) using the pronoun you (in the past, especially to use you rather than thou, when you was considered more formal).
zero (num) — sense 1 The cardinal number occurring before one and that denotes no quantity or amount at all, represented in Arabic numerals as 0.
zone (noun) — sense 1 Each of the five regions of the earth's surface into which it was divided by climatic differences, namely the torrid zone (between the tropics), two…
zone (noun) — sense 3 A given area distinguished on the basis of a particular characteristic, use, restriction, etc.
zone (verb) — sense 6 To enter a daydream state temporarily, for instance as a result of boredom, fatigue, or intoxication; to doze off.