مرتك

Etymology
From the synonymous,  from  which is attested since the 6th century and is probably akin to 🇨🇬.

Noun

 * 1) beam, girder, post, a squared balk of timber
 * 2) rafter, one of a series of beams designed to support the roof deck
 * 1) rafter, one of a series of beams designed to support the roof deck