MAASH. A large trading vessel of the Nile. MACE. A war-club of old. MACHICOULIS. A projecting gallery over gateways, or walls insufficiently flanked: being open at the bottom between its supporting corbels, it allows of defending the foot of the wall. MACKEREL. The _Scomber vulgaris_, a well-known sea-fish. MACKEREL-BOAT. A stout clinch-worked vessel, with a large fore-sail, sprit-sail, and mizen. MACKEREL-SKY. _See_ CIRRO-CUMULUS. MACKEREL-STURE. A northern name for the tunny, _Scomber thynnus_. MACULÆ. Dark temporary spots which are very frequently observed upon the sun's disc: they are of various forms, surrounded by a lighter shade or penumbra. MAD. The state of a compass needle, the polarity of which has been injured. MADDY, OR MADDIE. A large species of mussel abundant among the rocks of the western islands of Scotland and Wales.
The Sailor's Word Book by William Henry Smyth edited by Edward Belcher, published originally in 1867 by Blackie & Son
