rut
groove | a settled and monotonous routine that is hard to escape, they fell into a conversational rut |
| tongue and groove joint | a mortise joint made by fitting a projection on the edge of one board into a matching groove on another board |
band
banding
stria
striation | a stripe or stripes of contrasting color, chromosomes exhibit characteristic bands, the black and yellow banding of bees and wasps |
groove
vallecula | (anatomy) any furrow or channel on a bodily structure or part |
| costal groove | groove between the ribs where the nerves and blood vessels are |
| glacial boulder | a boulder that has been carried by a glacier to a place far distant from its place of origin |
groove
channel | a long narrow furrow cut either by a natural process (such as erosion) or by a tool (as e.g. a groove in a phonograph record) |
stria
striation | any of a number of tiny parallel grooves such as: the scratches left by a glacier on rocks or the streaks or ridges in muscle tissue |
Pleistocene
Pleistocene epoch
Glacial epoch | from two million to thousand years ago, extensive glaciation of the northern hemisphere, the time of human evolution |
ice age
glacial period
glacial epoch | any period of time during which glaciers covered a large part of the earth's surface, the most recent ice age was during the Pleistocene |
furrow
rut
groove | hollow out in the form of a furrow or groove, furrow soil |
| groove | make a groove in, or provide with a groove, groove a vinyl record |
arctic
frigid
gelid
glacial
icy
polar | extremely cold, an arctic climate, a frigid day, gelid waters of the North Atlantic, glacial winds, icy hands, polar weather |
frigid
frosty
frozen
glacial
icy
wintry | devoid of warmth and cordiality, expressive of unfriendliness or disdain, a frigid greeting, got a frosty reception, a frozen look on their faces, a glacial handshake, icy stare, wintry smile |
| glacial | relating to or derived from a glacier, glacial deposit |