From tsuwq; a narrow place, i.e. (abstractly and figuratively) confinement or disability -- anguish, distress, straitness.
see HEBREW tsuwq
H4689. matsoq
מָצוֺק noun [masculine] straitness, straits, stress; — always absolute ׳מ; — מ ׳כָּלאִֿישׁ 1 Samuel 22:2 every man of straits (in straits); וּבְמ ׳בְּמָצוֺר Deuteronomy 28:53, 55, 57; Jeremiah 19:9 (all of national straits); ׳צַרוּֿמ מְצָאוּנִי Psalm 119:143; perhaps read מָצוֺק also 32:6, for רק מצא, compare Du Br.