A primitive root; to trample; hence, to wash (properly, by stamping with the feet), whether literal (including the fulling process) or figurative -- fuller, wash(-ing).
H3526. kabas
[כָּבַס]51 verb (tread), wash (Late Hebrew id.; Phoenician כבס as participle; Assyrian kabâsu, tread (down), subjugate, kibšu, step, path, DlHWB) —
Qal Participle only כוֺבֵס שְׂדֵה מְסִלַּת highway of fuller's (= treader's, washer's) field Isaiah 7:3; 36:2 = 2 Kings 18:17.
Pi`el Perfect וְכִּבֶּס consecutive Leviticus 13:6 11t.; כִּבֵּס Genesis 49:11; 2 Samuel 19:25, etc.; Imperfect יְכַבֵּס Leviticus 11:25 16t.; 2 masculine singular suffix תְּכַבְּסֵנִי Psalm 51:9, etc.; Imperative suffix כַּבְּסֵנִי 51:4; feminine singular כַּבְּסִי Jeremiah 4:14; Participle plural מְכַבְּסִים Malachi 3:2; —
1 wash garments (i.e. by treading) Exodus 19:10, 14 (E), 2 Samuel 19:25; figurative of Judah Genesis 49:11; elsewhere chiefly P: Leviticus 6:20; 11:25, 28; 13:6, 34; 15:11; Numbers 8:9 +; "" רָחץ (which = wash person) Leviticus 14:8-9, 15:5-6, 7, 8, 10, 11 + (׳כ in Leviticus 27 t., "" ׳ר15t.; in Numbers 8 t., "" ׳ר3t.); Participle = fuller (compare Qal), only מְכ ׳בֹּרִית Malachi 3:2.
2 wash person, only in poetry and figurative בַּנֶּתֶר תְּכַבְּסִי אִם Jeremiah 2:22; לִבֵךְ מֵרָעָה כַּבְּסִי 4:14; with suffix Psalm 51:4 ("" טהר; + מֵעָוֺן); 51:9 ("" חִטֵּא).
Pu`al Perfect וְכֻבַּס consecutive Leviticus 13:58; 15:17 be washed, of garment.
Hothpa`al (Ges§ 54, 3) Infinitive אֶתהַֿנֶּגַע הֻכַּבֵּס אַחֲרֵי Leviticus 13:55 after the plague is washed out, so 13:56.