das Rindfleisch
beef
The meat of cattle, such as a cow or bull, intended for consumption.
Zum Abendessen gibt es heute einen Braten aus Rindfleisch.
For dinner today, there is a roast made from beef.

beef
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beef
The meat of cattle, such as a cow or bull, intended for consumption.
Zum Abendessen gibt es heute einen Braten aus Rindfleisch.
For dinner today, there is a roast made from beef.

The word is composed of 'Rind' (cattle, an animal such as a cow or bull) and 'Fleisch' (meat). The 's' in the middle is a linking S, which connects the two words. So it literally means 'meat from cattle'.
Für Gulasch kaufe ich immer frisches Rindfleisch.
I always buy fresh beef for goulash.
'Rindfleisch' (beef) is normally used as an uncountable noun, similar to 'Wasser' (water) or 'Milch' (milk). When specifying an amount, you use units of measurement such as 'Gramm' (grams), 'Kilo' (kilos), or 'ein Stück' (a piece).
Für das Rezept benötigen wir 500 Gramm Rindfleisch.
For the recipe, we need 500 grams of beef.
Common verbs used with 'Rindfleisch' (beef) are 'zubereiten' (to prepare), 'braten' (to fry/roast), 'kochen' (to cook/boil), and 'essen' (to eat). Typical adjectives are 'zart' (tender), 'mager' (lean), or 'saftig' (juicy).
Das Rindfleisch war sehr zart und hat gut geschmeckt.
The beef was very tender and tasted good.
meat / flesh
'das Fleisch' and 'das Rindfleisch' can both refer to a food. However, 'Fleisch' is the general term for meat from animals. 'Rindfleisch' is more specific and means only meat from cattle, that is, from a cow or bull. You can confuse the words because beef is also meat. If the animal type does not matter, 'Fleisch' is enough. If it is important what kind of meat it is, 'Rindfleisch' sounds more natural and precise.

Für die Suppe kauft mein Bruder frisches Rindfleisch beim Metzger.
For the soup, my brother buys fresh beef at the butcher's.
Im Restaurant gibt es heute auch ein Gericht ohne Fleisch.
At the restaurant, there is also a dish without meat today.