how do you call those things in wood?

[space-time]

when you cut up a log into boards there are sometimes those round "defects" where there was a branch growing and you see that in the board. eventually if wood dries at some point that thing can pop out.

Do these things have a specific name in English?

Thanks

[fmgtech]

http://en.wikipedia.org/wiki/Wood#Knots

[rgG]

Knots.

[NewtonMP2100]

....excitement.....???

....more specifically....if it is morning WOOD......then morning excitement......????

[OWC Jamie]

holes

[Monster]

exciting knot-holes for your wood.

[space-time]

knots indeed, thanks

[OWC Jamie]

beware the naughty pine

[NewtonMP2100]

......thats KNOT what I heard.....