le cassette = the cassette / the tape / the cassette tape
It can mean an audio-cassette, but in the past it meant a small case (sometimes for carrying money).
'le beurre' is 'the butter' in English.
'le menton' means the chin in English.
qui a le ... means 'who has the ... / which has the ...'
"Cassette" in English is spelt the same in French: cassette.
Le placard (masc.) means the cupboard in English.
le pouce (masc.) means 'the thumb' in English.
le soleil (masc.) means the sun in English.
Le singe means 'the monkey' in French.
Le sang est ... means "the blood is ..." in English.
"le visage" is a French word meaning "the face" in English
"The portable cassette-player" is an English equivalent of the French phrase le baladeur. The pronunciation of the masculine singular phrase -- which also translates as "the music-player" and "the Walkman" -- will be "luh ba-la-duhr" in French.