English

Adjective

glassen ‎(comparative more glassen, superlative most glassen)

1. Made of or consisting of glass
   • 2012, B. Suchoff, ‎Bela Bartok, Rumanian Folk Music:

     From the castle calls Ileana, Refrain (Looking) through the glassen windows, (Looking) through the glassen windows: [...]

   • 2013, Allen G. Debus, The Chemical Philosophy:

     But I had a glassen vessel, of a narrow neck, weighing 1354 grains: [...]

2. Resembling glass; glassy; glazed

   And pursues the dice with glassen eyes. — Ben Jonson.

   • 2004, John Coulson Tregarthen, John Penrose: A Romance of the Land's End:

     Abreast of the players, he jumped down, seized one of the taws - it was a glassen alley - knuckled down, fired kibby at the clayers in the ring, and was back in his seat before you could cry "Jack Robinson".

Etymology 2

From glass +‎ -en ‎(verbal suffix).

Verb

glassen ‎(third-person singular simple present glassens, present participle glassing, simple past and past participle glassed)

1. (transitive) To coat or cover (e.g. pottery, etc.) with glaze; to glaze

Swedish

Noun

glassen

1. definite singular of glass