Extended Strong's Hebrew Lexicon (Brown-Driver-Briggs based)
Helem
Usage: A man living at the time of Exile and Return, first mentioned at Zec.6.10; also called Helem at Zec.6.14; Another name of chel.day (חֶלְדַּי "Heldai" H2469G) § Helem = "strength" or "dream" a returned exile in the time of Zechariah; also spelled 'Heldai'