From an unused root meaning to lick up; a devourer; specifically, the young locust -- cankerworm, caterpillar.
H3218. yeleq
יֶ֫לֶק noun masculineNahum 3:16 a kind of locust, absolute יֶלֶק 3:16 5t.; יָ֑לֶק Joel 1:4 2t.; — always collective:
a. as devouring "" חָסִיל אַרְבֶּה, גָּזָם,, Joel 1:4 (twice in verse); 2:25; "" אַרְבֶּה Psalm 105:34 (of Egyptian plague), compare Nahum 3:15 a (but strike out We).
b. in simile of multitude of men Nahum 3:15b Jeremiah 51:14; of horses 51:27 (סָמָר יֶלֶק).
c. in simile of scattering and disappearing Nahum 3:16.
יַלְקוּט see לקט.