The term in-between is hyphenated as a noun (intermediary) or descriptive adjective. When used as an adverb phrase (e.g. in between the two walls) it means between and is not one word.
*There is one jargon use of the word inbetween in animation: one of the animation frames that fill the spaces between the key frames to provide the illusion of motion.
what word is inbetween tumbler and tuna
Epizeuxis, also known as palilogia is the repetition of a single word within a sentence for emphasis, with no words inbetween.
all the numbers through 564 to 652 are all inbetween 563 and 653
The cast of Inbetween Lines - 2010 includes: Stefan Scally as himself
Nothing
The cast of Inbetween Nights - 2011 includes: Rachelle Rose Clark as Annie
The cast of Inbetween Worlds - 2012 includes: Max Morfoot Gus Morfoot as Gus
inbetween
Red White & Inbetween
"en medio"
36
Tuck it inbetween your legs...