They don't even need a lengthener.

Mercha: "Lengthener", because it prolongs the melody of the word that follows.

"You ever use this lash lengthener stuff?"

The 'lengthener' was never issued.

In this method, there is no risk of accidentally over-stretching the bone due to the lengthener being preset to the desired fully extended length.

The Bayonet 'lengthener' was a special scabbard for the M/1894 with a bayonet mount added.

Leaning closer, she steadied the lash darkener and lengthener, closed it firmly over the lashes of her left eye, and hit the plunger.