T0433400 (twēn)n. A child between middle childhood and adolescence, usually between 8 and 12 years old. Also called tweener.[Blend of teen and between.]
'tween
(twin)
prep. contraction of between.[1250–1300; Middle English twene, aph. variant of atwene (see a-1) or betwene between]TranslationsintercalareThesaurusSee'tween