What is the meaning of Mismo?

same; identical; one and the same; indicates that the two compared noun clauses both represent the one thing

similar; alike; practically identical; indicates that the two compared noun clauses have one or more matching qualities

self; emphasizes the identity or singularity of the modified noun phrase

own; emphasizes the owner or the exclusivity of ownership in a noun phrase with a possessive pronoun

self; myself; yourself; himself; herself; itself; ourselves; themselves; emphasises the identity or singularity of the modified noun phrase

Source: wiktionary.org

See also