From thunder + squall. <span class="searchmatch">thundersquall</span> (plural <span class="searchmatch">thundersqualls</span>) (rare, nautical, meteorology) A squall accompanied by thunder. 1855, Thomas Chandler Haliburton...
<span class="searchmatch">thundersqualls</span> plural of <span class="searchmatch">thundersquall</span>...
thundershock thundershower thunder sleet thunder snake thundersnow thundersome <span class="searchmatch">thundersquall</span> thunder stick thunderstick thunder-stick thunderstone thunderstorm thunderstricken...