From Wiktionary, the free dictionary
Literally, “to put heart (to)”.
שָׂם לֵב • (sam lev)
- to notice, to note [with לְ־ (l'-) ‘to’]
- אף אחד לא שם לב לשגיאה. ― af ekhád lo sam lev lashgi'á. ― No one noticed the mistake.
- to pay attention (to) [with לְ־ (l'-) ‘to’]