Old Testament Hebrew Lexical Dictionary
Strong's #08242 - שַׂק
1) mesh, sackcloth, sack, sacking
1a) sack (for grain)
1b1) worn in mourning or humiliation
1b2) same material spread out to lie on
Jeff Brenner, Ancient Hebrew Research Center Used by permission of the author.
שַׂק m. with suff.-שַׂקּוֹ, plur. שַׂקִּים
(1) sack-cloth, thick cloth, especially made of hair, like strainers (see the root שָׂקַק ), used also for corn sacks and mourning garments. (Compare Ethiop. ሠቅ፡ sack-cloth, hence the clothing of monks and holy pilgrims, ሠቅሠቅ፡ lattice, Gr. σάκος, σάκκος, sack-cloth, Lat. saccus, which Jerome also used for the garment of a pilgrim; also, σάγος, sagum, i.e. a thick cloak used by soldiers.) Isaiah 3:24, מַחֲגֹרֶת שַׂק a girdle of sackcloth. Hence
(2) a corn sack, Genesis 42:25, 27 Genesis 42:27, 35 Genesis 42:35; Leviticus 11:32.
(3) the dress of mourners, Genesis 37:34; 2 Samuel 3:31; Esther 4:1; Joel 1:8; Jonah 3:6 of devotees and prophets, Isaiah 20:2.