How to Say "marrow" in Spanish
The Spanish word for “marrow” is “sesos” — B1 level.
English → SpanishB1
nounB1
sometimes used for inner substance

Examples
En este restaurante sirven tacos de sesos.
In this restaurant, they serve brain tacos.
El accidente fue fuerte, pero no se dañó los sesos.
The accident was bad, but he didn't damage his brains.
Always Plural
This word is almost always used in its plural form (with an 's'), even when referring to one person or animal.
Sesos vs. Cerebro
Mistake: “Using 'sesos' in a biology or medical context.”
Correction: Use 'cerebro' for the biological organ and 'sesos' for the substance (especially food) or mental capacity.
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