an imaginary line between areas, countries, surfaces etc

outer limit

a journey round a circle or closed route

revolution, track, boundary

an instrument with a needle that points to the magnetic north

boundary, periphery

the state of being shut up or imprisoned

imprisonment; restriction

difficult or infrequent emptying of the bowels

muscle spasm

a sudden and painful tightening of the muscles, usually caused by cold or overwork, making movement difficult

muscle spasm

a line or point that may not or cannot be passed; greatest or smallest amount, extent etc of what is possible

greatest extent

(a cause, feeling, of) doubt; an arrangement to keep something for a person to use, e.g. a seat in a train, a room in a hotel

condition, stipulation

(an instance, example, of) restricting or being restricted

limit

the outer form, outline of something; a sort; condition

form, structure