metheg
/ˈmɛθɛɡ/(also methegh, meteg)
noun
In Hebrew writing: a small, perpendicular stroke beneath a consonant letter and to the left of a vowel sign, used to indicate stress and the lengthening of the vowel.
Origin
Late 16th century; earliest use found in John Udall (c1560–?1593), religious controversialist. From post-classical Latin metheg from post-biblical Hebrew meṯeg, lit. ‘bridle’, of uncertain origin.