Quick Definition
a little child
Strong's Definition
an infant, i.e. (plural figuratively) darlings (Christian converts)
Derivation: diminutive of G5043 (τέκνον);
KJV Usage: little children
Thayer's Greek Lexicon
τεκνίον, τεκνιου, τό (diminutive of τέκνον, which see; (on the accent, cf. Winers Grammar, 52; Chandler § 347)), a little child; in the N. T. used as a term of kindly address by teachers to their disciples (always in the plural little children: Mar_10:24 Lachmann); Joh_13:33; Gal_4:19 (where L text T Tr WH marginal reading τέκνα); 1Jn_2:1; 1Jn_2:12; 1Jn_2:28; 1Jn_3:7 (WH marginal reading παιδία),; . (Anthol.)
Mounce Concise Greek Dictionary
τεκνίον teknion 8x
a little child; τεκνία , an endearing appellation, my dear children, Joh_13:33 ; 1Jn_2:1 ; 1Jn_2:12 ; 1Jn_2:28 ; 1Jn_3:7 ; 1Jn_3:18 ; 1Jn_4:4 ; 1Jn_5:21
Abbott-Smith Greek Lexicon
† τεκνίον , -ου , τό
(dimin. of τέκνον ),
a little child: as a term of endearment, in voc. pl ., Joh_13:33 , Gal_4:19 , 1Jn_2:1 ; 1Jn_2:12 ; 1Jn_2:28 ; 1Jn_3:7 ; 1Jn_3:13 ; 1Jn_4:4 ; 1Jn_5:21 .†
Moulton & Milligan — Vocabulary of the Greek NT
τεκνίον [page 628]
For this dim. of τέκνον cf. P Oxy XIV. 1766 .14 (iii/A.D.) ἀσπάζομαι . . . τὰ ἀβάσκαντα τεκνία , I greet your children, whom the evil eye will not harm.
Liddell-Scott — Intermediate Greek Lexicon
τεκνίον τεκνίον, ου, τό, [Etym: Dim. of τέκνον] "a little" child, Anth. , NTest.
STEPBible — Tyndale Abridged Greek Lexicon
τεκνίον, -ου, τό
(dimin. of τέκνον),
a little child: as a term of endearment, in voc. pl., Jhn.13:33, Gal.4:19, 1Jn.2:1 Jn 2:12 Jn 2:28 Jn 3:7 Jn 3:13 Jn 4:4 Jn 5:21.†
(AS)