|Noah Webster's Dictionary|
1. (v. i.) To make a shop, sharp, cheerful, as of small birds or crickets.
2. (n.) A short, sharp note, as of a bird or insect.
Int. Standard Bible Encyclopedia
cherp (tsaphaph): "Chirp" occurs in the King James Version marginand the Revised Version, margin of Isaiah 29:4, "Thy voice shall be as of one that hath a familiar spirit, out of the ground, and thy speech shall whisper (margin, "chirp") out of the dust." The reference is to "the sounds made by wizards and ventriloquists, who imitated the chirping of the bats which was supposed to proceed from the Iower world"; hence, for "peep" of the King James Version in Isaiah 8:19 we have "chirp"-"wizards, that chirp and that mutter."
Figurative: We have also in Isaiah 10:14 the Revised Version (British and American), in a figurative allusion to young birds, "chirped" instead of "peeped."
W. L. Walker
Chirp (3 Occurrences)
Isaiah 8:19 When they tell you, "Consult with those who have familiar spirits and with the wizards, who chirp and who mutter:" shouldn't a people consult with their God? Should they consult the dead on behalf of the living? (WEB JPS ASV DBY RSV)
Isaiah 10:14 My hand has found the riches of the peoples like a nest, and like one gathers eggs that are abandoned, have I gathered all the earth. There was no one who moved their wing, or that opened their mouth, or chirped." (Root in WEB JPS ASV DBY NAS RSV NIV)
Isaiah 29:4 And thou shalt be brought down, and shalt speak out of the ground, and thy speech shall be low out of the dust; and thy voice shall be as of one that hath a familiar spirit, out of the ground, and thy speech shall whisper out of the dust. (See JPS)