"Homoiconic" means that a program's definitions are stored in a textual form which can be re-edited at run time. Bash is homoiconic because you can type "set" to see all the function definitions in source code form, and edit them via copy-paste. Line numbered BASIC interpreters are likewise homoiconic. The program is held in memory in lightly tokenized form; any line of it can be recalled and edited.

That's how the originator of the term "homoiconic" defined it.