מְקֻצְעָהmᵉqutsʻâh

Hoph`al: cornered? set in corners? (Ezekiel 46:22; Exodus 26:23; Exodus 36:28)

Pronunciation: mek-oots-aw' · Hebrew/Aramaic (Old Testament) · H4742

Same root

קָצַעqâtsaʻ · H7106to strip off, i.e. (partially) scrape; by implication, to segregate (as an angle)

Where it appears

Appears 2 times in the Bible.

Exodus 26:23 along with two additional frames to reinforce the rear corners of the Tabernacle.
Exodus 36:28 along with two additional frames to reinforce the rear corners of the Tabernacle.

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).