roofbolts التعريفات والمعاني == English == === Noun === roofbolts plural of roofbolt === Verb === roofbolts third-person singular simple present indicative of roofbolt شارك هذه المقالة: Facebook Twitter WhatsApp LinkedIn كلمات ذات صلة roofbolt roofboxes roofbolter roofbolting roofbolters roofbolted rockbolts