…the lowest part or edge of something, especially the part on which it rests or is supported…
…a camp from which mountaineering expeditions set out or from which a particular activity can be carried out…
…a fair ball hit such that the batter can advance safely to a base without an error by the team in the field…
…a parachute jump from a fixed point, typically a high building or promontory, rather than an aircraft…
…a pair of complementary bases in a double-stranded nucleic acid molecule, consisting of a purine in one strand linked by hydrogen bonds to a pyrimidine in the other. Cytosine always pairs with guanine, and adenine with thymine (in DNA) or uracil (in RNA)…
…the straight-line path from one base to the next, defined by the position of the base runner while a play is being made…
…the base rate of pay for a job or activity, not including any additional payments such as overtime or bonuses…
…(in the UK) the interest rate set by the Bank of England for lending to other banks, used as the benchmark for interest rates generally…
…a fundamental unit that is defined arbitrarily and not by combinations of other units. The base units of the SI system are the metre, kilogram, second, ampere, kelvin, mole, and candela…
…the fans of a sports team, pop group, etc. considered as a distinct social grouping…
…a place from which operations or activities are carried out; headquarters…
…a signal for uniformly and repeatedly deflecting the electron beam of a cathode ray tube…
…a coal stove or furnace into which coal is fed automatically from a hopper as the lower layers are burned…
…a common metal that is not considered precious, such as copper, tin, or zinc…
…a player on the team at bat who is on a base, or running between bases…
…the level or altitude of the lowest part of a general mass of clouds…
…a compound or ionic species which can donate an electron pair to an acceptor compound…
…a source of authority, influence, or support, especially in politics or negotiations…
…an organic compound having the structure R1R2CNR3 (where R1,2,3 are alkyl groups and R1 may be hydrogen)…
…an application of manure or fertilizer to the earth, which is then ploughed or dug in…
…a nonprofit store for the purchase of personal items, clothing, refreshments, etc., at a naval or air force base…
…a military hospital situated at some distance from the area of active operations during a war…
…a relay located at the centre of any of the cells of a cellular telephone system…
…a store of information or data that is available to draw on…
