Probably for H7827; the cerulean {mussel} that {is} the color (violet) obtained therefrom or stuff dyed therewith: - blue.
Verse
Matrix
Neh 3:21After him repaired Meremoth the son of Urijah the son of Koz another piece, from the door of the house of Eliashib even to the endH8503 of the house of Eliashib.