λέγοντες· προφήτευσον ἡμῖν, Χριστέ,plugin-autotooltip__default plugin-autotooltip_bigΧριστός

Christ means “anointed one”

The equivalent Hebrew word is Messiah (מָשִׁיחַ)

Noun, masculine.
τίς ἐστινplugin-autotooltip__default plugin-autotooltip_bigεἰμί

greek

εἰμί is the first person singular verb for “to be” (εἶναι [the infinitive form] = “to be”).

It an irregular verb, and, like English, changes significantly between person and tense. For example εἰμί is the word for am and ἦν is the word for was, e.g.
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greek

The definite article
παίσας σε;