noun, plural (especially collectively) skip·jack, (especially referring to two or more kinds or species) skip·jacks for 1; skip·jacks for 2, 3.
- any of various fishes that leap above the surface of the water, as a tuna, Euthynnus pelamis, or the bonito.
- Entomology. click beetle.
- Nautical. an American one-masted sailing vessel.