TOUR, to take a sightseeing trip, is from Old
French tourner (to turn).
The TOURIST sense is far sharper in the Biblical Hebrew
where TOOR is to "explore" the land (Numbers13:2).
The essence is not sight-seeing, but going around to see the lie of the land.
TOAR (line, row or
TURN) covers the TOUR of duty sense. TaYaR is a TOURIST in Modern Hebrew.
and TURN for
sound-alike dental-liquid opposite words of straight lines, and swerving away
from straight lines. Sahf-Vav-Resh matches Samekh-Vav-Resh see SWERVE.
not about DURATION (see DWELL). Dental-liquid staying power is heard
in DOOR (to dwell see DWELL). But the same Daled-Vav-Resh, DOOR, means to
encircle (Ezekiel 24:5 see TIRE).