H7405. rakas
[רָכַס] verb bind (Assyrian rakâsu, id.; Late Hebrew found, lay foundation (rare); Arabic bind with [rope tying camel's head to forefoot] (Frey); but usually turn over, reverse (Lane)); —
Qal Imperfect3masculine plural יִרְכְּסוּ (P) [Exod 28:28], וַיִּרְכְּסוּ [39:21], bind חשֶׁן by (מִן) its rings to (אֶל) rings of ephod.