porthole Portheus • porthook · · · Info · Definitions · Synonyms · Characters · · porthole · · Text Latin · · Script 8 · · Length Definitions · · · (noun) a window in a ship or airplane. · · Noun Definition 1 (noun) an opening (in a wall or ship or armored vehicle) for firing through. Synonyms: port, embrasure. · · Noun Definition 2 Synonyms · · · port · · Synonym 1 embrasure · · Synonym 2 Characters · · e latin small letter e U+0065 h latin small letter h U+0068 l latin small letter l U+006C o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 t latin small letter t U+0074