barm noun¹. [bɑ:m] Long obsolete exc. dial. in comb.
[Old English barm, bearm = Old Frisian, Old Saxon, Old High German barm, Old Norse barmr, Gothic barms, from Germanic, rel. to BEAR verb¹.]
A bosom, a lap.
Abraham's barm: see ABRAHAM 1.

Comb.:
barm cloth an apron; barm-skin a leather apron.

[TahlilGaran] English Dictionary ▲

barm noun² & verb. [bɑ:m] Also balm.
[Old English beorma prob. from Low German: cf. Old Frisian berme, barm, Danish bärme, Swedish bärma, German Bärme.]
A. noun. The froth on the top of fermenting malt liquors, used to leaven bread and to ferment other liquors; yeast, leaven. OE.
b. verb trans. & intrans. Mix with yeast, leaven; rise in froth or fermentation. LME.

[TahlilGaran] English Dictionary ▲