ἐστί
From LSJ
Μισθὸς διδάσκει γράμματ', οὐ διδάσκαλος → Pretium docet te, non praeceptor, litteras → Der Lehrer lehrt das Lesen nicht, es ist der Lohn
French (Bailly abrégé)
3ᵉ sg. prés. de εἰμί.
English (Strong)
third person singular present indicative of εἰμί; he (she or it) is; also (with neuter plural) they are: are, be(-long), call, X can(-not), come, consisteth, X dure for a while, + follow, X have, (that) is (to say), make, meaneth, X must needs, + profit, + remaineth, + wrestle.