(engineering, computing) To provide a baseline for measurement. / (tennis) To play from the baseline.

A small open container for discarded paper etc; a wastebasket.

in a fundamental, essential or basic manner / mostly; generally; for the most part

The catfish Pangasius bocourti.

(chemistry) Any nucleophylic compound that can donate a pair of electrons and form a coordinate covalent bond.

The state of having invested heavily in just one area. / The state of having devoted all of one’s resources to one thing.

(chemistry) Any compound, of general formula Xⁿ⁺, which can be transformed into a conjugate acid HX⁽ⁿ⁺¹⁾⁺ by the gain of a proton.

A long-necked and solid-bodied stringed instrument (chordophone), tuned to produce bass or low notes, usually with a fretted fingerboard and four thick strings, and requiring the use of an amplifier.

The largest stringed instrument of the violin family. / The deepest of all male voices.

A parachute jump from a fixed point rather than from an aircraft; typically from a tall building, high bridge or rock formation.