蓪

Aralia papyrifera

grass radical 草字頭兒|草字头儿[cao3 zi4 tou2 r5]

to go through / to know well / (suffix) expert / to connect / to communicate / open / to clear / classifier for letters, telegrams, phone calls etc

classifier for an activity, taken in its entirety (tirade of abuse, stint of music playing, bout of drinking etc)