תַּנִּין

From LSJ

ἀλλὰ διὰ τῆς ἀγάπης δουλεύετε ἀλλήλοις. ὁ γὰρ πᾶς νόμος ἐν ἑνὶ λόγῳ πεπλήρωται, ἐν τῷ Ἀγαπήσεις τὸν πλησίον σου ὡς σεαυτόν → but be enslaved to each other through love; for the whole Torah is fulfilled in one statement: You will love your neighbor as yourself (Galatians 5:13f.)

Source

English (Strong)

or tanniym (Ezek. 29:3); intensive from the same as תַּנִּים; a marine or land monster, i.e. sea-serpent or jackal: dragon, sea-monster, serpent, whale.