chaljachalkboard

chalk (English) [ IPA: ˈtʃɔk ASM: চক]
Contributed by: Rupankar Mahanta on 2008-03-30
1. (Material Noun-Neuter) a soft, white, powdery limestone consisting chiefly of fossil shells of foraminifers which is often used for marking, as a blackboard crayon ব্লেকব’ৰ্ডত লিখিবলৈ ব্যৱহাৰ কৰা বগা মাটিৰ পদাৰ্থ