<span class="searchmatch">jackcrosstree</span> (plural <span class="searchmatch">jackcrosstrees</span>) (nautical) The highest of the crosstrees of a ship which supports the jackstaff....
<span class="searchmatch">jackcrosstrees</span> plural of <span class="searchmatch">jackcrosstree</span>...
look like a sovereign. [19th c.] (nautical, now rare, historical) A <span class="searchmatch">jackcrosstree</span>. [from 19th c.] (games) A small, six-pointed playing piece used in the...