We found one dictionary that defines the word jump at one's own shadow:

General (1 matching dictionary)

1. jump at one's own shadow: Wiktionary

Definitions from Wiktionary (jump at one's own shadow) ▸ verb:  To be exceptionally timid. ▸ Words similar to jump at one's own shadow ▸ Usage examples for jump at one's own shadow ▸ Idioms related to jump at one's own shadow ▸ Wikipedia articles (New!) ▸ Words that often appear near jump at one's own shadow ▸ Rhymes of jump at one's own shadow ▸ Invented words related to jump at one's own shadow