3. [AS. Sid. Cf Side] long; large; extensive. His gown had side sleeves down to mid leg. (Laneham) Side action, in breech-loading firearms, a mechanism for operating the breech block, which is moved by a lever that turns sidewise. Side arms, weapons worn at the side, as sword, bayonet, pistols, etc. Side ax, an ax of which the handle is bent to one side. Side-bar rule, a rule authorised by the courts to be granted by their officers as a matter of course, without formal application being made to them in open court; so called because anciently moved for by the attorneys at side bar, that is, informally. Side box, a box or inclosed seat on the side of a theater. To insure a side-box station at half price. (Cowper) side chain, one of two safety chains connecting a tender with a locomotive, at the sides. Side cut, a canal or road branching out from the main one. Side dish, one of the dishes subordinate to the main course. Side glance, a glance or brief look to one side. Side hook, a cutting tool, used in a lathe or planer, having the cutting edge at the side instead of at the point. Side wind, a wind from one side; hence, an indirect attack, or indirect means.