tor·toise 
(tôr

t

s)
KEY NOUN:
- Any of various terrestrial turtles, especially one of the family Testudinidae, characteristically having thick clublike hind limbs and a high, rounded carapace.
- Chiefly British A terrestrial or freshwater chelonian.
- One that moves slowly; a laggard.
ETYMOLOGY:Alteration (influenced by
porpoise), of Middle English
tortuce from Medieval Latin
tort
ca, alteration of Late Latin
tartar
cha, feminine of
tartar
chus,
of the underworld ; see
turtle1