celt 
(sĕlt)
(sĕlt)n.
A common prehistoric tool of stone or metal, shaped like a chisel or axe head.
[Medieval Latin celtis, chisel probably back-formed from celte, a word found in some manuscripts of the Vulgate (Job 14:24) and interpreted as the ablative of a Latin *celtis, chisel, but probably a misreading of Latin certē, certainly.]
- inshore
- in short
- in short order
- inshrine
- inshrine
- Inshta Theumba ("Bright Eyes").
- inside
- inside job
- inside of
- inside out
- Inside Passage
- insider
- insider trading
- inside track
- insidious
- insidiously
- insidiousness
- insight
- insightful
- insightfully
- insightfulness
- insigne
- insignia
- insignificance
- insignificancy