Quick Definition
ἀνθρακιά, ᾶς, ἡ n.f. a heap of burning coals
Strong's Definition
a bed of burning coals
Derivation: from G440 (ἄνθραξ);
KJV Usage: fire of coals
UBS Dictionary of the Greek New Testament
noun, f. | -ᾶς | ἄνθραξ
2.6 · Natural Substances · Fire
charcoal fire The occurrence of ἀνθρακιά ‘charcoal fire’ in JHN 18:18 fits the context well, since a charcoal fire provides a maximum of heat with a minimum of smoke. The making and use of charcoal is widespread throughout the world, and there is generally no difficulty in obtaining a satisfactory term for ‘charcoal.’ However, where such a term does not exist, it is possible to speak of ‘a wood fire’ or simply ‘a fire.’
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
ἀνθρακιά [on accent cf. Etym. Magn. 801, 21; Chandler ὃ 95], -as, 7, a heap of burning coals: Jn. xviii. 18; xxi. 9. (Sir. xi. 32; 4 Macc. ix. 20; Hom. Ii. 9, 213, ete.) [Cf. BB.DD. 8. v. Coal.]
Mounce Concise Greek Dictionary
ἀνθρακιά anthrakia 2x
a mass or heap of live coals, Jn. 18:18; 21:9
Abbott-Smith Greek Lexicon
** ἀνθρακιά, -ᾶς, ἡ
(< ἄνθραξ), [in LXX: Si 11:32, IV Mac 9:20*;]
a heap of burning coals: Jo 18:18 21:9.†
Liddell-Scott-Jones — Greek-English Lexicon
ἀνθρακιά (anthrakia) — charcoal fire. ἀνθρᾰκ-ιά, ᾶς, Epic dialect ἀνθρᾰκ-ιή, ῆς, ἡ, burning charcoal, hot embers, ἀνθρακιὴν στορέσαι[Refs 8th c.BC+]; ἀνθρακιᾶς ἄπο a broil hot from the embers, [Refs 5th c.BC+]; σου τῆς ἀνθρακιᾶς ἀπολαύει warms himself at your fire, [Refs 5th c.BC+]; Κύπριδος ἀ.[Refs 3rd c.BC+]
2. black sooty ashes,[Refs 1st c.AD+]