Ludwig Koehler and Walter Baumgartner discuss the meaning of תבל; meanings include "immersion" and "to dip something into."
Ludwig Koehler and Walter Baumgartner, "תבל," The Hebrew and Aramaic Lexicon of the Old Testament (Leiden: Brill, 1995) (Bibleworks ed.)
3377 טבל
I טבל: MHeb. טְבוּל יוֹם) who has taken an immersion on the same day) JArm.tb(g?) Sam. (Ben-H. 2:476); Arb. mutÌabbal moist, tÌamala to dye, impregnate.
qal: pf. טָבַל, טָבַלְתָּ; impf. יִטְבֹּל, תִּטְבְּלֵנִי:
—1. to dip something into: בְּ Gn 3731 Ex 1222 Lv 46.17 99 146.16.51 Nu 1918 Dt 3324 1S 1427 2K 815 Ru 214 (bread in vinegar); to immerse somebody Job 931; with מִן־הַדָּם Lv 417 and מִן־הַשֶּׁמֶן 1416, to dip something into oil )or blood(;
—2. to dive, plunge into: בְּ 2K 514 = רחץ 10.12. †
nif: pf. נִטְבְּלוּ: to be dipped in Jos 315. †