From under- + brim. <span class="searchmatch">underbrim</span> (plural <span class="searchmatch">underbrims</span>) The underside of a hat's brim. 1917, Dry Goods Economist, volume 71, page 81: Several of the colored...
<span class="searchmatch">underbrims</span> plural of <span class="searchmatch">underbrim</span>...
underbred underbreeches underbreed underbrew underbrewer underbridge <span class="searchmatch">underbrim</span> underbring underbrush underbudget underbuild underbuilder underbum underburden...
brimfully brimless brimmy broadbrim halo brim hatbrim overbrim to the brim <span class="searchmatch">underbrim</span> border or edge of a sea, a river, or other body of water; any border or...