biological weapon

NOUN
17 LETTERS · STARTS WITH B

biological weapon is a valid 17-letter word worth 26 points in Scrabble and 33 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
B3I1O1L1O1G2I1C3A1L1W4E1A1P3O1N1
3 + 1 + 1 + 1 + 1 + 2 + 1 + 3 + 1 + 1 + 0 + 4 + 1 + 1 + 3 + 1 + 1 =26 PTS
DOUBLE WORD → 52TRIPLE WORD → 78
MEANING

What does biological weapon mean?