þann

In a sentence

• Í gær sá ég þann bíl sem þú talaðir um.

  Yesterday, I saw that car you were talking about.

  The word 'þann' here is the accusative singular masculine form of 'that', used to specify a particular car.

• Hann afþakkaði þann mat sem var búinn.

  He declined that food which was prepared.

  In this sentence, 'þann' is used to emphasize a specific portion of food in the masculine singular accusative form.

• Við löbbuðum með þann mann eftir götunni.

  We walked with that man down the street.

  Here, 'þann' is referring to a specific man in the accusative case, masculine singular.