eucalyptus tree

NOUN
15 LETTERS · STARTS WITH E

eucalyptus tree is a valid 15-letter word worth 21 points in Scrabble and 25 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
E1U1C3A1L1Y4P3T1U1S1T1R1E1E1
1 + 1 + 3 + 1 + 1 + 4 + 3 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 1 =21 PTS
DOUBLE WORD → 42TRIPLE WORD → 63
MEANING

What does eucalyptus tree mean?