至友

zhìyǒu
  1. (literary) closest friend; bosom friend; best friend
  2. closest friend; bosom friend; best friend

Wiktionary

Entry Composition

=1 至 zhì
  1. to arrive
  2. most
  3. to
  4. until
=1 至 dié only used in 單至／单至
2 友 yǒu friend