50nl; flop decision against unknown

[Schiester]

$0.25/$0.50 Blinds - 6 Players - (LegoPoker Hand History Converter)

Hand played against relative unknown.

SB: $16.42
BB: $46.66
UTG: $18.00
MP: $112.24
Hero (CO): $47.97
BTN: $25.03

Preflop: Hero is dealt T[img]/images/graemlins/heart.gif[/img] T[img]/images/graemlins/diamond.gif[/img] (6 Players)
UTG calls $0.50, MP folds, <font color="red">Hero raises to $2.50</font>, 3 folds, UTG calls $2.00

Flop: ($5.75) 8[img]/images/graemlins/spade.gif[/img] Q[img]/images/graemlins/spade.gif[/img] Q[img]/images/graemlins/diamond.gif[/img] (2 Players)
UTG checks, <font color="red">Hero bets $4.50</font>, <font color="red">UTG raises to $9.00</font>, <font color="red">Hero?????

Fold / Call / Shove?

In retrospect, this looks like a Q trying to dodge the flush draw.

Very general question, but what does cr 'tend to' mean at 25/50nl?