duct gland

NOUN
10 LETTERS · STARTS WITH D

duct gland is a valid 10-letter word worth 14 points in Scrabble and 19 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
D2U1C3T1G2L1A1N1D2
2 + 1 + 3 + 1 + 0 + 2 + 1 + 1 + 1 + 2 =14 PTS
DOUBLE WORD → 28TRIPLE WORD → 42
MEANING

What does duct gland mean?