It looked hollow, grooved back for a distance from the point.
These boards are grooved on both sides and placed on the stairs.
The nose is long and high, and broad and flat at its extremity, and is also grooved longitudinally.
We have found pieces of grooved sandstone that the later Cave-men used.
His lip curled back brute-like till his teeth showed, while his face was grooved, seamed and twisted uglily.
There were one or two stone hammers, grooved for hafting, like the ax.
Many of the axes were grooved for hafting; one of the specimens was doubly grooved and had two cutting edges.
A piece of board is grooved with a jack-knife in the manner shown in the diagram.
The bed stock is cut into strips, planed on all sides, and tongued and grooved on the widest sides.
Then they put a handle on the grooved stone and fastened it with rawhide.
c.1400, "cave, mine, pit" (late 13c. in place names), from a Scandinavian source, cf. Old Norse grod "pit," or from Middle Dutch groeve "furrow, ditch," both from Proto-Germanic *grobo (cf. Old Norse grof "brook, river bed," Old High German gruoba "ditch," Gothic groba "pit, cave," Old English græf "ditch"), related to grave (n.). Sense of "long, narrow channel or furrow" is 1650s. Meaning "spiral cut in a phonograph record" is from 1902. Figurative sense of "routine" is from 1842, often deprecatory at first, "a rut."
1680s, "make a groove," from groove (n.). Slang sense is from late 1930s. Related: Grooved; grooving.
A rut, groove, or narrow depression or channel in a surface.
[fr the sense that a musician is in a definite and exciting track, has hit a perfect stride, when playing well, esp a solo; perhaps influenced by the grooves of a phonograph record]