יַצַעyatsaʻ

lay, spread

Pronunciation: yaw-tsah' · Hebrew/Aramaic (Old Testament) · H3331

Meanings

Hiph`il: lay, spread out (Isaiah 58:5; Psalms 139:8)

Hoph`al: be laid, spread (Esther 4:3; Isaiah 14:11)

Same root

יָצוּעַyâtsûwaʻ · H3326spread, i.e. a bed; (architecture) an extension, i.e. wing or lean-to (a single story or collectively)
יָצַרyâtsar · H3335to mould into a form; especially as apotter; figuratively, to determine (i.e. form a resolution)
מַצָּעmatstsâʻ · H4702a couch

Where it appears

Appears 4 times in the Bible.

Esther 4:3 And as news of the king’s decree reached all the provinces, there was great mourning among the Jews. They fasted, wept, and wailed, and many people lay in burlap and ashes.
Psalms 139:8 If I go up to heaven, you are there; if I go down to the grave, you are there.
Isaiah 14:11 Your might and power were buried with you. The sound of the harp in your palace has ceased. Now maggots are your sheet, and worms your blanket.’
Isaiah 58:5 You humble yourselves by going through the motions of penance, bowing your heads like reeds bending in the wind. You dress in burlap and cover yourselves with ashes. Is this what you call fasting? Do you really think this will please the Lord?

Source: Brown, Driver and Briggs, Hebrew and English Lexicon of the Old Testament (1906), public domain; markup by unfoldingWord, CC BY (github.com/unfoldingWord/Brown-Driver-Briggs-Enhanced).