Kamasutra
वाडवेन लिङ्गमवगृह्य निष्कर्षन्त्याः पीडयन्त्या वा चिरावस्थानं सन्दंशः ॥ ३३॥
Pinching ॥ sandansha॥ : With the lips of her vulva ॥ vadavena = varanga aushtha॥ seizing the phallus, sliding inside and keeping it tight is known as pinching.
english translation
सन्दंश- स्त्री, पुरुष के शिश्न को मदनमन्दिर में डालकर थोड़ी के समान देर तक भीतर खींचती या दबाती रहे तो उसे सन्दंश कहते है ॥ ३३॥
hindi translation
vADavena liGgamavagRhya niSkarSantyAH pIDayantyA vA cirAvasthAnaM sandaMzaH ॥ 33॥
hk transliteration by Sanscript