"One" has one

• Punster's instrument
• Cache for cash, say

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM CORPUS ▪ Although we could not remove all homophones, we could treat differently certain classes of words which are frequently accessed erroneously. ▪ If such effects were included, the number of homophones would probably be still greater. ...

Wikipedia Word definitions in Wikipedia
A homophone is a word that is pronounced the same as another word but differs in meaning, and may differ in spelling. The words may be spelled the same, such as rose (flower) and rose (past tense of "rise"), or differently, such as carat , caret , and carrot ...

Wiktionary Word definitions in Wiktionary
n. 1 A word which is pronounced the same as another word but differs in spelling ''or'' meaning ''or'' origin, for example: carat, caret, carrot, and karat. http://www.merriam-webster.com/dictionary/homophone http://www.askoxford.com/concise_oed/homophone?view=uk ...

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
"a word pronounced the same as another (whether spelled the same or not) but different in meaning," 1843, from the adjective homophone (1620s), from Greek homos "same" (see homo- (1)) + phone "sound" (see fame (n.)). Related: Homophonic .

WordNet Word definitions in WordNet
n. two words are homophones if they are pronounced the same way but differ in meaning or spelling or both (e.g. bare and bear)

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Homophone \Hom"o*phone\, n. [Cf. F. homophone. See Homophonous .] A letter or character which expresses a like sound with another. --Gliddon. A word having the same sound as another, but differing from it in meaning and usually in spelling; as, all and ...