As nouns the difference between tribble and thribble
is that tribble is a horizontal frame with wires stretched across it for drying paper or tribble can be a fictional alien creature in , a cooing ball of fur while thribble is a set of oil drilling pipes having three joints.
As an adjective thribble is
(label) threefold.
tribble
English
Etymology 1
Noun
(
en noun)
A horizontal frame with wires stretched across it for drying paper.
Etymology 2
Probably invented for alliteration with (trouble); the creatures first appeared in an episode called The Trouble with Tribbles .
thribble
English
Adjective
(-)
(label) threefold
Noun
(
en noun)
A set of oil drilling pipes having three joints