מוּסָר

From LSJ

κραδία δὲ φόβῳ φρένα λακτίζει → my heart knocks at my ribs

Source

English (Strong)

from יָסַר; properly, chastisement; figuratively, reproof, warning or instruction; also restraint: bond, chastening ((-eth)), chastisement, check, correction, discipline, doctrine, instruction, rebuke.