From an unused root meaning to break apart; fracture, i.e. Severity -- cruelty, rigour.
Englishman's Concordance
1) harshness, severity, cruelty Part of Speech: noun masculine A Related Word by BDB/Strong’s Number: from an unused root meaning to break apart Same Word by TWOT Number: 1817a
II. פרך (√ of following; compare Assyrian parâku, bar, shut off; parakku, apartment, shrine; Syriac shrine (see RSJPhil 13, 283); see also Muss-ArnJBL xi (1892), 77 Köii. 1, 201).
Exodus 1:13 HEB:בְּנֵ֥י יִשְׂרָאֵ֖ל בְּפָֽרֶךְ׃ NAS: of Israel to labor rigorously; KJV: of Israel to serve with rigour: INT: the sons of Israel rigorously
Exodus 1:14 HEB:עָבְד֥וּ בָהֶ֖ם בְּפָֽרֶךְ׃ NAS: which they rigorously imposed KJV: wherein they made them serve, [was] with rigour. INT: which imposed rigorously
Leviticus 25:43 HEB:תִרְדֶּ֥ה ב֖וֹ בְּפָ֑רֶךְ וְיָרֵ֖אתָ מֵאֱלֹהֶֽיךָ׃ NAS: You shall not rule over him with severity, but are to revere KJV: Thou shalt not rule over him with rigour; but shalt fear INT: shall not rule severity revere your God
Leviticus 25:46 HEB:תִרְדֶּ֥ה ב֖וֹ בְּפָֽרֶךְ׃ ס NAS: you shall not rule with severity over one KJV: one over another with rigour. INT: shall not rule severity
Leviticus 25:53 HEB:לֹֽא־ יִרְדֶּ֥נּֽוּ בְּפֶ֖רֶךְ לְעֵינֶֽיךָ׃ NAS: he shall be with him; he shall not rule over him with severity in your sight. KJV: shall he be with him: [and the other] shall not rule with rigour over him in thy sight. INT: shall not rule severity your sight
Ezekiel 34:4 HEB:רְדִיתֶ֥ם אֹתָ֖ם וּבְפָֽרֶךְ׃ NAS: but with force and with severity you have dominated KJV: but with force and with cruelty have ye ruled INT: force have dominated severity
shrine (see RSJPhil 13, 283); see also Muss-ArnJBL xi (1892), 77 Köii. 1, 201).