I tried to find etymology of "thimble". No luck, except
from one of Dr.Wertelecki's sites:
THIMBLE id+ | METAL TIP | also note
cont> see> THUMB
med> see> THUMB implies THICK FINGER
akin to a THIGH
eng TUBER KNOT in TUBERCULOSIS
TUMOR DISORDER TUMULT
TURGOR TURGENT ERECT
lat TUBER SWELLING or KNOT
TUMERE SWELL
lith TUKTI TO BECOME FAT
TAUKAS ANIMAL FAT sug> LARD
gr TUMBOS BURIAL MOUND
sp TUMBA see> TOMB
TUMBAR TO MAKE FALL
TUMBADO FALLEN

"Turgor" is a word I've not seen for a long time. I remember
it in biology referring to tendency of cells to imbibe water
causing a tissue to become enlarged and more resistant to
gravity, etc.