(links)

Abbreviations

B.	Breton
Br.	British
c.	circa, around
C	century (after numbers)
C	consonant
C.	Cornish
cf.	compare with
Cu.	Cumbric
e	early
E.	English
F.	French
g	genitive
G.	Scottish Gaelic
Gaul.	Gaulish
Gk.	Greek
I.	Irish
l	late
L.	Latin
M	Middle, Medieval
M.	Manx
Mod	modern
O	Old
ON.	Old Norse
PC.	Proto-Celtic
PGmc.	Proto-Germanic
PIE.	Proto-Indo-European
pl.	plural
R.	River
sg.	singular
V	vowel
VL.	Vulgar Latin
W.	Welsh
‹ ›	orthographic form (spelling)
/ /	phonemic form (basic sounds)
[ ]	phonetic form (detailed sounds)
*	hypothetical/reconstructed form
**	expected but unattested form
†	archaic or obsolete
>	leads to
<	derives from
:	cognates