n. 同音异形异义字 例如：sun和son

[ noun ]
two words are homophones if they are pronounced the same way but differ in meaning or spelling or both (e.g. bare and bear)
<noun.communication>

Homophone \Hom"o*phone\, n. [Cf. F. homophone. See
{Homophonous}.]
1. A letter or character which expresses a like sound with
another. --Gliddon.

2. A word having the same sound as another, but differing
from it in meaning and usually in spelling; as, all and
awl; bare and bear; rite, write, right, and wright.