I received this very pleasant comment from Supriya Dey today:
“I absolutely enjoy the daily Dr Goodword feeds. Thank you.”
“For today’s word, I was wondering if nid in nidicolous is related to nir [neer]. which means “home” or “nest” in some Indian languages. The syllable col also means “lap” in Bengali, an Indian language. Any relations?”
It depends on which Indian languages you are talking about. If they are Indo-European, like Bengali, Hindi, Marathi, and Oriya, the answer would be an unqualified “yes” for nir “nest”. They would not be included in the etymological sources that I use because little is known by Western European etymologists about Indo-Iranian languages. If you are talking about Dravidian languages, like Kanada, Telugu, Mayalayam, the answer would be “no”.
The word col “lap” presents more problems, however. Col- is the PIE root (if this is the root of Latin colere at all), which would have changed considerably in the past 5000 years. This root became carati, calati in Sanskrit and referred to movement. There are many questions surrounding this word even if it occurs in Bengali. As I say in the Good Word nidicolous: it takes some stretch of the imagination to take “rotate” to “inhabit”. The same would apply for “lap”. Taken together, the sound change problem and the semantic one, would probably exclude it from consideration.
I heard back from Supriya telling me that nir does, in fact, occur only in north Indian languages.