Strong’s Hebrew
H8108 — shomrah
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
שׇׁמְרָה
shomrah — pronounced shom-raw
feminine of an unused noun from 8104 meaning a guard; watchfulness:--watch. see H08104
1 occurrence in the KJV.
Psalms 141:3
Set a watch, O LORD, before my mouth; keep the door of my lips.