A person who knows many foreign languages

A small piece of wood

A lady's umbrella is:

Walking in sleep

<strong>Study of environment</strong> is a newly evolving branch of science.

A person who enters without any invitation

One who collects coins as hobby :

Bringing about gentle and painless death from incurable disease

The automobile has tended to <strong>destroy without any trace</strong> the difference between rural and urb…