He donks turn, what does it mean?

[dirtylobster]

Villain is 26/5/1, haven't noticed anything out of line from him, I'm running 27/22/4 at the table over 130 hands. Notice we're 160+bb deep. What's his line about? Strong hand afraid of the flush draw? Instamuck or call and see what he does on the river?

Poker Stars, $0.50/$1 NL Hold'em Cash Game, 6 Players
LeggoPoker Hand History Converter

SB: $100
BB: $19.90
UTG: $112
MP: $160
CO: $167.20
Hero (BTN): $225.10

Pre-Flop: A[img]/images/graemlins/spade.gif[/img] J[img]/images/graemlins/club.gif[/img] dealt to Hero (BTN)
2 folds, <font color="red">CO raises to $3</font>, <font color="red">Hero raises to $10.50</font>, 2 folds, CO calls $7.50

Flop: ($22.50) 3[img]/images/graemlins/spade.gif[/img] A[img]/images/graemlins/heart.gif[/img] 8[img]/images/graemlins/spade.gif[/img] (2 Players)
CO checks, <font color="red">Hero bets $15.50</font>, CO calls $15.50

Turn: ($53.50) Q[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">CO bets $31</font>