This woody central part of a tree trunk consists of sapwood & heartwood
The wider rings are on the underside of the leaning trunk because growth
... [DOC] [TLE] heartwood nedir, ne demek, heartwood anlam - Sesli Szlk [PAR] heartwood nedir, evirisi ve heartwood hakknda videolar, online cretsiz eviri ... 
part of a tree, usually:  The hard, central part of the trunk of a tree, consisting of 
the ... wood layer (sapwood) by its darker color: The inner core of a woody stem,... [DOC] [TLE] heartwood.