pin·nace 
(pĭnĭs)
(pĭnĭs)n.
1. A light boat propelled by sails or oars, formerly used as a tender for merchant and war vessels.
2. Any of various kinds of ship's boats.
[French pinace, from Old French, probably from Old Spanish pinaza, from pino, pine tree, boat, from Latin pīnus; see peiə- in the Appendix of Indo-European roots.]