Definitions:

1. (anatomy) the part of an organ nearest its point of attachment noun
   • the base of the skull
2. (used of metals) consisting of or alloyed with inferior metal adjective
   • base coins of aluminum
3. a flat bottom on which something is intended to sit noun
   • a tub should sit on its own base
4. a support or foundation noun
   • the base of the lamp
5. any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water noun
   • bases include oxides and hydroxides of metals and ammonia
6. having or showing an ignoble lack of honor or morality adjective
   • that liberal obedience without which your army would be a base rabble Edmund Burke
7. installation from which a military force initiates operations noun
   • the attack wiped out our forward bases
8. lowest support of a structure noun
   • it was built on a base of solid rock
9. not adhering to ethical or moral principles adjective
   • base and unpatriotic motives
10. of low birth or station (`base' is archaic in this sense) adjective
    • baseborn wretches with dirty faces
11. serving as or forming a base adjective
    • the painter applied a base coat followed by two finishing coats
12. the bottom or lowest part noun
    • the base of the mountain
13. the bottom side of a geometric figure from which the altitude can be constructed noun
    • the base of the triangle
14. the principal ingredient of a mixture noun
    • glycerinated gelatin is used as a base for many ointments
15. the stock of basic facilities and capital equipment needed for the functioning of a country or area noun
    • the industrial base of Japan
16. to situate as a center of operations verb
    • We will base this project in the new lab.
17. to use as a basis for verb
    • We based our movie on the comic book series.
18. to use purified cocaine by burning it and inhaling the fumes verb
    • The addict based from a spoon.

Synonyms:

• alkali
• bag
• basal
• base of operations
• baseborn
• basis
• establish
• floor
• found
• foundation
• free-base
• ground
• home
• humble
• immoral
• infrastructure
• lowly
• mean
• nucleotide
• radix
• stand
• stem

NearBy Words:

• base-forming
• baseball
• baseboard
• baseborn
• based
• basel
• baseless
• baseline
• basely
• basement
• baseness
• basenji