umbonal

1. In conchology, a part of each valve of a bivalve toward the umbo and within the pallial line; that part of the shell which is delimited by the mantle-margin.

2. Protuberant, like a knob, boss, or umbo; umbonic; umbonate: as, an umbonal formation.

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Top Words by points	Points	Word Game
umbonal	11	Scrabble

2 Letters	Scrabble® Points
al	2
un	2
um	4
on	2
om	4
nu	2
no	2
na	2
mu	4
mo	4
ma	4
lo	2
la	2
ab	4
bo	4
ba	4
an	2
am	4

3 Letters	Scrabble® Points
amu	5
boa	5
man	5
moa	5
mob	7
mol	5
mon	5
mun	5
oba	5
nab	5
nam	5
nob	5
nom	5
nub	5
alb	5
oma	5
lab	5
lam	5
lob	5
ban	5
bum	7
bun	5
lun	3
lum	5
bal	5
bam	7

4 Letters	Scrabble® Points
blam	8
buna	6
noma	6
numb	8
bola	6
luna	4
balm	8
ulan	4
ulna	4
umbo	8
alum	6
ambo	8
muon	6
mola	6
moan	6
maun	6
maul	6
mano	6
lamb	8
loam	6
loan	4
luma	6

5 Letters	Scrabble® Points
album	9
louma	7

7 Letters	Scrabble® Points
umbonal	11