turvu (p. 248) s. An unwalled well or reservoir, a hole or excavation to get water, கூவம். 2. A large or deep well, கிணறு. (c.) துரவுச்சட்டம், s. A wicker-work-curb at the bottom of a well. துரவுமுழுக, inf. [loc.] To sink a well by gradually lowering a curb. 20) *