sur·veil 
(sər-vāl)
(sər-vāl)tr.v. sur·veilled, sur·veil·ling, sur·veils
To keep under surveillance.
[Back-formation from SURVEILLANCE.]
- trip-hop
- triphosphate
- triphosphopyridine nucleotide
- triphthong
- triphthongal
- tripinnate
- tripinnately
- triplane
- triple
- triple agent
- triple alpha process
- triple bond
- Triple Crown
- triple-decker
- triple-digit
- triple digits
- triple-double
- triple figure
- triple-header
- tripleheader
- triple jump
- triple measure
- triple play
- triple point
- triple rhyme