herepuru
1. (noun) caulking, sealant - material for sealing the seams and holes of a canoe.
Honoa te haumi, aukaha rawa i ngā rauawa, whakaū rawa he herepuru anō mō ngā rauawa, he raupō hoki mō te wai kei uru ki roto (TWMNT 17/11/1874:285). / Add the canoe extension, lash the top boards, reinforce the caulking for the top boards and also with raupō least water leaks in.