Read me this bet please?

[stokken]

PokerStars No-Limit Hold'em, $2 BB (7 handed) FTR converter on zerodivide.cx

MP1 ($98.45)
MP2 ($127)
CO ($126.95)
Hero ($233.35)
SB ($445.85)
BB ($119.25)
UTG ($137.50)

Preflop: Hero is Button with 9[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
2 folds, MP2 raises to $4[, 1 fold, Hero calls $4, SB calls $3, BB calls $2.

Flop: ($16) 6[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/heart.gif[/img], 2[img]/images/graemlins/spade.gif[/img] (4 players)
SB checks, BB bets $4, MP2 folds, Hero raises to $18, SB folds, BB raises to $48</font>, Hero ?

Now I thought his bet screamed flush draw, but unsure after raise? If he was deep it would be an easy fold, but he is short after this bet

[orange]

Fold PF.

it means your beat and to throw your hand away while you still have your chips infront of you.