Meaning : Make longer.
Example :
Lengthen this skirt, please.
Make shorter than originally intended. Reduce or retrench in length or duration.
He shortened his trip due to illness.Meaning : Become long or longer.
Example :
In Spring, the days lengthen.
Lengthen ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Hindi. Lengthen ka matlab kya hota hai?