From dalah; properly, something dangling, i.e. A loose thread or hair; figuratively, indigent -- hair, pining sickness, poor(-est sort).
see HEBREW dalah
H1803. dallah
I. דַּלָּה noun feminine collective, hair, thrum (both front hanging down) — דַּלָּה Isaiah 38:12; construct דַּלַּת Cant 7:6; — hair, ׳ד ראשׁך Cant 7:6; thrum (threads of warp hanging in loom) in simile of premature death יְבַצְּעֵנִי מִדַּלָּה 38:12.
II. [דַּלָּה] noun feminine the poor — construct דַּלַּת Jeremiah 40:7 2t.; plural דַּלּוֺת 52:15-16, — the poor (collective, weak, helpless ones) 40:7; 2 Kings 24:14; 25:12 (in "" Jeremiah 52:16, as also 52:15, ᵑ0 has strangely the plural)