From chashab; a contrivance, i.e. Actual (a warlike machine) or mental (a machination) -- engine, invention.
see HEBREW chashab
H2810. chishshabon
[חִשָּׁבוֺן] noun masculine device, invention (compare LagBN 200) — only plural absolute חִשְּׁבֹנוֺת; רַבִּים חִשְּׁבֹנוֺת בִקְשׁוּ וְהֵמָּה יָשָׁר אֶתהָֿאָדָם הָאֱלֹהִים עָשָׁה Ecclesiastes 7:29 God made mankind upright but they sought out many devices; חֹוֺשֵׁב מַחֲשֶׁבֶת חִשְּׁבֹנוֺת וַיַּעַשׂ2 Chronicles 26:15 and he made contrivances (i.e. engines of war for hurling stones and arrows, see vb) the invention of inventive men.