Tenir is a verb, not a noun in the French language. It means "to hold" or "to keep."
trop difficile à tenir is tranlslated 'too difficult to hold'. "tenir" may also be understood as in 'tenir une promesse', to stand true to a promise or commitment.
Tenir in French is "to take hold" in English.
tenir
"To hold," the infinitive verb, can be translated as "tenir".
Tenir
The cast of Tenir les murs - 2011 includes: Reda Kateb
to hold
Il tenir.
to stand = être debouttall = grandstanding tall: approx. "se tenir droit debout, se tenir tout debout"
tenant , se tenir
se tenir debout
The cast of Tenir la nuit - 2013 includes: Nicolas Bouchaud Adrien de Van Joana Preiss as Sterenn