Brown-Driver-Briggs
מִכְבָּר noun masculine grating or lattice-work, construct
מִכְבַּר; —
Exodus 27:4 and thou shalt make for it (the altar of burnt-offering in the tabernacle)
מִכְבָּר מַעֲשֵׂה רֶשֶׁת נְהשֶׁת a
grating, (even) a network of bronze, which surrounded the lower half of the altar (Exodus 27:5 b): so
Exodus 38:4;
מִכְבַּר הַנְּחשֶׁת Exodus 35:16;
Exodus 38:5,30;
Exodus 39:39.
