Zi Collection, Upper Volume Radical: Mouth (kǒu) Pronounced guó (falling tone) Same as the character. Refers to the end of a bone. Explained in "Boya" as "kè". Zi Collection, Upper Volume Radical: Mouth (kǒu) Pronounced huó Same meaning. Zi Collection, Upper Volume Radical: Mouth (kǒu) Pronounced huá Explained in "Leipian" as "gé", meaning something used to obstruct.