spike rush

NOUN /spaɪk_rəʃ/
10 LETTERS · STARTS WITH S

spike rush is a valid 10-letter word worth 18 points in Scrabble and 19 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
S1P3I1K5E1R1U1S1H4
1 + 3 + 1 + 5 + 1 + 0 + 1 + 1 + 1 + 4 =18 PTS
DOUBLE WORD → 36TRIPLE WORD → 54
MEANING

What does spike rush mean?