FROM STRONG’S HEBREW DICTIONARY (1890)

Strong’s Hebrew Dictionary (1890) — public domain, printed whole.

shamar shaw-mar' — a primitive root; properly, to hedge about (as with thorns), i.e. guard; generally, to protect, attend to, etc.:--beward, be circumspect, take heed (to self), keep(-er, self), mark, look narrowly, observe, preserve, regard, reserve, save (self), sure, (that lay) wait (for), watch(-man).